Nebo swivel flashlight problems. The powerful LED flashlight can shine up to 160 meters away. The Swyvel is a 16340-powered light. ca: Tools & Home Improvement Apr 24, 2020 · I mostly use them for camping or just messing around in the backyard. $29. Lanterns. 5 out of 5 stars 492 NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black 4. 5 hours / 18 meters, Red light High (40 lumens Feb 20, 2023 · The newest generation of NEBO’s best-selling rechargeable flashlight, the SLYDE KING Flashlight and Worklight features a central light with adjustable zoom, a Chip on Board (COB) red light function, and the ability to program memory settings for all of its light modes. Considering it as an EDC. Flashlights. The compact size and steel clip provide convenient carry, and the 90 swivel head and magnetic base give you hands-free light in any direction. com: nebo big daddy flashlight. NEBO™ Product Manual List. Make sure your everyday carry light of choice is a solid pick. Shop Nov 26, 2012 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Oct 29, 2020 · The SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Special feature: Removable,Smart Power: Power source: Battery Powered: Material: Alloy Steel, Aluminum: Included components: 1 x Nebo 89571B Swyvel 1000 Lumen Rechargeable Pocket Light NEBO Big Larry Work Light, 600 Lumen Flashlight with COB Work Light, Pocket Clip Magnetic Base for Hands-Free Lighting, Portable COB LED Dimmable Flashlight, Hazard Light-Red 4. Runs on 3 AA batteries with swivel head. 1-48 of 617 results for "nebo rechargeable flashlight" Results. Oct 14, 2023 · When your Nebo flashlight is malfunctioning, systematic troubleshooting can help identify the underlying issue. 75 hours / The BRAUN™ 900 Lumen Rechargeable Swivel Head LED Flashlight has a 90° pivoting head for precise light placement. Patreon: https://www. Our full selection of NEBO™ Lighting manuals. patreon. I tried changing the batteries, but to no avail. Ive been happy with the other Nebo lights I have, do wish they would have done their full dimming on the Swyvel though. The built-in Dimming and Power Memory Setting ensure you have the perfect amount of light for any situation, and with its rechargeable design, you never have to worry about running out of Amazon. Small enough to fit comfortably in your pocket, this flashlight doesn’t compromise on performance. Franklin Swivel 600L Versatile, Compact, Rechargeable 600 Lumen 90 Degree Swivel Head Flashlight. Engineered for industry-leading brightness, C•O•B LED chip technology provides brilliant illumination while offering improved energy efficiency over standard LEDs. NEBO SLYDE+ Tactical LED Flashlight, Powerful 400-Lumen Bright Camping Flashlight with Slide-To-Reveal Work Light, Red Hazard Light & Magnetic Base 4. Step into the charm of classic lighting with Nebo's Franklin collection. Oct 20, 2014 · NEBO Franklin Swivel Taskbar 500 Lumen COB Work Light and Flashlight with 7 Light Modes, Great for Emergencies and Signaling,Grey 4. A new EDC flashlight that caught my attention is the NEBO SWYVEL rechargeable pocket light. You might contact the company through this toll free number and query. Jan 3, 2012 · Hello everyone, I am happy to find fellow flashlight lovers. 6 out of 5 stars. Whether you’re a police officer or work as a first responder or in search and rescue, NEBO has a tactical flashlight that will help you be prepared for anything. The Fenix has both a neutral white LED and red LED function and is much brighter than a NEBO. 2 out of 5 stars 438 Shop for NEBO All Flashlights in Flashlights at Walmart and save. NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black Big Larry Work Light, 600 Lumen Flashlight with COB Work Light, Pocket Clip Magnetic Base for Hands-Free Lighting, Portable COB LED Dimmable Flashlight, Hazard Light-Red 4. Sep 20, 2020 · NEBO’s compact USB rechargeable flashlight offers a 90º rotating swivel head, making it easy to aim and carry no matter what direction you point it in. Built To Last: Rugged aircraft-grade aluminum construction. Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black Review of the NEBO SWYVEL 90 degree swivel rotating head flashlight. NEBO Franklin Swivel Taskbar 500 Lumen COB Work Light and Flashlight with 7 Light Modes, Great May 21, 2020 · Saw the Nebo Swyvel the other day, and it has my attention. 800. Shop for Nebo Franklin Swivel 600-Lumen Rechargeable Flashlight at Cabela’s, your trusted source for quality outdoor sporting goods. com/SWYVEL FLA SWYVEL Compact 1,000 Lumen Rechargeable EDC Flashlight with a 90º Rotating Swivel Head The SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. 255. NEBO Franklin Swivel 600L Versatile, Compact, Rechargeable 600 Lumen 90 Degree Swivel Head Flashlight. With our low price guarantee, get the best brands and latest gear at unbeatable everyday prices. The red C•O•B light is perfect for distress signaling or roadside emergencies. High-grade vintage-inspired work lights. NEBO SWYVEL Flashlight : The SWYVEL is a versatile,USB rechargeable flashlight that features Smart Power Control which smoothly transitions 5 light modes including high powered 1000 lumen Turbo Mode. Nebo Franklin Swivel LED Flashlights NEB-WLT-0022 Color: Black, Fabric/Material: Anodized aircraft-grade aluminum, 25% Off 2) Removing the tail cap from the body of the light housing (which requires removing a second screw and possibly another additional cap). The magnetic base and integrated clip provide options for easy hands-free use. By purchasing NEBO replacement LED flashlight batteries, you'll save hundred of dollars that you might have spent on traditional alkaline batteries. That offers• High (500 lumens) - 1 hour / 100 meters• Medium (200 lumens) - 1. 1 out of 5 stars The Franklin Swivel 600L is a versatile, rechargeable flashlight that features a 600 lumen turbo mode. The NEBO CRYKET is a versatile 3-in-1 LED light, featuring a 240 lumen COB work light, a bright 250 lumen spot light and an intense red light. 1 out of 5 stars The NEBO Franklin Swivel 600 Lumen Right Angle Rechargeable Flashlight is small enough for your pocket and bright enough for any job. au: Home Improvement The SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. NEBO is one of the world's best-selling lines of innovative, consumer-friendly flashlights and tools. Jan 15, 2023 · The magnetic tail cap of the Skilhunt M200 makes it a great EDC option for people who frequently need an ad-hoc work light in the field. The compact size and steel clip provide convenient carry, and the 90º swivel head and magnetic base give you hands-free light in any direction. First, check and make sure the batteries aren’t dead or dying. We believe in big ideas and understand sometimes unconventional thinking is needed to get the job done. If so, you can replace them to fix the problem. NEBO offers a wide selection of tactical lights, from small pocket flashlights to powerful handheld flashlights. Its 12. 5 hours / 18 meters, Red light High (40 lumens) - 20 hours / 7 Oct 15, 2022 · Another common problem that you might have to face is that the battery will not hold a charge on your Nebo Flashlight. With our low price guarantee, we strive to offer the lowest everyday prices on the best brands and latest gear. The compact size and steel clip provide convenient carry, and With its 4x zoom capability, you can focus the flashlight beam exactly where you need it, while the work light offers a wide, evenly distributed illumination. It features 7 light modes, Direct-to-Red, and Power Memory Recall. NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black The best flashlight is the one that's always with you. 99. com/FASTpatreon. BUY Nebo Franklin Swivel LED Flashlights 600 Lumens. Power. 5 hours / 18 meters, Red light High (40 lumens) - 20 hours / 7 At NEBO® tools. Having sold over 30 million LED lights globally, our flashlights, work lights and lanterns provide high quality rechargeable LED lighting the way it should be, affordable, reliable and durable. The BIG Larry 2 outputs 500 lumens with the C•O•B work light and 200 lumens from the top flashlight. Not only are they powerful and portable, but they also come equipped with COB LED technology which makes them much more reliable and functional than traditional work lights. The 90-degree swivel head makes for an adjustable lighting angle so you can get the perfect light for any task. Its unique swivel design allows the light’s head to rotate into a forward-facing light. It would not turn on. NEBO Big Larry Work Light, 600 Lumen Flashlight with COB Work Light, Pocket Clip Magnetic Base for Hands-Free Lighting, Portable COB LED Dimmable Flashlight, Hazard Light-Red 4. Jan 28, 2013 · In this video guide, we cover common troubleshooting issues for LED flashlights. OLIGHT Swivel Pro COB Work Light The SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. Toll-Free - 1. May 18, 2021 · The FRANKLIN TWIST by NEBO is a powerful rechargeable handheld flashlight and work light with 6 light modes. Keep reading to learn more! Nebo If your Nebo flashlight isn’t staying on, a few things could be wrong. Nebo BIG Cryket https://www. nebotools. Some time ago, I purchased two Nebo Redline Tactical flashlights. If the batteries look good and your flashlight still won’t stay on, it might be dirty inside where the contacts touch when you turn it on. Nebo Swyvel LINK. Jump Starters Power Banks Light & Power Bat Light 1500(NEB-FLT-0038) Larry 500 Flex(NEB-WLT-0033) Edge 2K(NEB-POC-0014) Bando 1k Automotive Light(NEB-WLT-0034) Illumatrace Blood Tracker Headlamp(NEB-HLP-0020) NEBO jump starters, portable power stations, electric coolers, and solar panels have a two-year warranty from the date of purchase. 50+ bought in past month. Four light modes for versatile lighting: low/high spot and low/high flood; High-strength machined aluminum barrel can withstand hard use BUY Nebo Franklin Swivel LED Flashlights. That will cause you even more inconvenience since you will be trying to get it charged, and after a few minutes of usage or just putting it down, the battery will be drained up. Fully Dimmable and magnetic base. The SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black : Amazon. This model comes with a Kleinstool branded LED light and a rechargeable battery. May 27, 2023 · By following these steps, you should have no problem charging up your Nebo flashlight in no time! Be sure to keep these instructions handy so that you always have them on hand when needed. NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black The Nebo Franklin Swivel 600L is a compact and versatile rechargeable flashlight designed to illuminate the night with powerful efficiency. The NEBO big cryket is a versatile 3-in-1 LED light, featuring a 300 lumen COB work light. The NEBO SWYVEL EDC flashlight is named after one of its main features, the ability to swivel its head 90 degrees, and comes with a magnet, making it quite useful in tight spots. Oct 20, 2022 · Nebo quickly became one of the world’s favorite flashlight brands and in this article, you can figure out how to solve Nebo flashlight problems (if you’re experiencing them). The compact size and steel clip provide convenient carry, and the 90º swivel head and magnetic base give you hands-free light in any Buy NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black: Tools & Home Improvement - Amazon. Today we take a look at the Nebo Franklin Swivel 600L flashlight. Explore a wide selection of quality outdoor gear at Bass Pro Shops, the trusted source for Nebo Franklin Swivel 600-Lumen Rechargeable Flashlight . 6. The FRANKLIN SWIVEL 600L is a versatile, rechargeable flashlight that features a 600 lumen turbo mode. The SWYVEL flashlight features a compact size with pocket clip, 90 degree rotating swivel head, and magnetic base for hands-free use. Work light & spot light with 9 position swivel head. 5 out of 5 stars 495 Feb 23, 2024 · NEBO Franklin Swivel Taskbar 500 Lumen COB Work Light and Flashlight with 7 Light Modes, Great for Emergencies and Signaling; LIGHT MODES: Flashlight High (200 lumens) - 8 hours / 75 meters, Flashlight Low (60 lumens) - 24 hours / 50 meters, Work light High (500 lumens) - 2. 7. Otherwise, it looks the exact same. OUT OF STOCK NEBO. That's where NEBO comes in. 5 hours / 18 meters, Red light High (40 lumens May 31, 2024 · NEBO Franklin Swivel Taskbar 500 Lumen COB Work Light and Flashlight with 7 Light Modes, Great for Emergencies and Signaling; LIGHT MODES: Flashlight High (200 lumens) - 8 hours / 75 meters, Flashlight Low (60 lumens) - 24 hours / 50 meters, Work light High (500 lumens) - 2. The flashlights come with a year warranty. The TWIST features an ARCUS COB LED ring that acts as a task light or lantern and the powerful LED chip in the flashlight can shine up to 89 meters away. The steel clip and magnetic base provide convenient hands-free lighting options. The Larry line by NEBO is one of the most famous flashlight families to ever exist. It’s also a very bright light, with a maximum output of 1,100 lumens emitted by its CREE XP-L HD LED module. We offer some of the brightest rechargeable LED flashlights for hunting, fishing, camping, EDC, tactical use & more. Feb 14, 2023 · Nebo Flashlight SWYVEL 1000 Lumens - The Nebo Swyvel 1000 lumen flashlight is a high-performance flashlight that boasts an impressive 1000 lumen output. The compact size and steel clip provide convenient carry, and the 90° swivel head and magnetic base give you hands-free light in any direction. It i Franklin Swivel Taskbar 500 Lumen COB Work Light and Flashlight with 7 Light Modes, Great for Emergencies and Signaling,Grey Nebo Inspector 500+ penlight LED NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black 4. Even the highest quality products sometimes require repairs or fixes, and in this case, you can be your own master. The included battery allows for up to 60 hours of operation in between charges. The SW Mar 16, 2023 · At just 2. I believe I found the battery on the Nebo website. The 4 different light modes provide you with multiple options to make sure you have the light you need, and the magnetic base and 90-degree swivel head lets you shine light in the precise direction you need it. com FREE DELIVERY possible on eligible purchases Oct 26, 2023 · NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black The best flashlight is the one that's always with you. 7 Watts : Light Source Wattage 20 Watts : Specification Met [SOME] Water and impact resistance (IPX4) Number of Light Sources 2 : Are Batteries Included Yes : Product Dimensions 8"L x 4"W x 8"H : Manufacturer Nebo : UPC 645397936046 : Part Number NEB-WLT-0015 : Item Weight The NEBO Franklin Swivel 600L Flashlight is a versatile, rechargeable flashlight that features a 600-lumen turbo mode. Check if the bulb is functioning and the battery has a charge. This allows replacement and access to most but not all 18650 batteries like option one (newer models with flat terminals will no longer fit). Both impact and water resistant to withstand the toughest of conditions. 3 out of 5 stars. Rechargeable. 6 out of 5 stars 50 1 offer from $13. Inspect it visually for any obvious damages. Buying extra rechargeable batteries may seem strange, until you realize that buying that extra battery means your NEBO rechargeable flashlight can operate continuously without taking a recharge rest. NEBO Franklin Swivel 600L Versatile, Compact, Rechargeable 600 Lumen Swivel Head Flashlight Design: Compact Size and Steel Clip provide convenient carry and the 90-degree swivel head and magnetic base provide hands -free light NEBO: Providing take-charge people with innovative lighting products that consistently deliver on the promise of value and performance About this item . Color: Black, Fabric/Material: Aircraft-Grade Aluminum, Beam Color: White, Light Output: 600 lumens, Charger Type: USB, Bulb The NEBO SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. 64 inches in length the Torchy pocket flashlight is perfect for use as an everyday carry flashlight, camping light, hiking light, or cap light while you’re working. SWYVEL - Compact 1,000 Lumen Rechargeable EDC Flashlight with a 90º Rotating Swivel HeadThe SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. Oct 24, 2023 · NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black The best flashlight is the one that's always with you. Oct 21, 2016 · The NEBO CRYKET is a versatile 3-in-1 LED light, featuring a 240 lumen COB work light, a bright 250 lumen spot light and an intense red light. 86 Designed with a 500 lumen LED flashlight, a 450 lumen C•O•B work light and 4 light modes, it easily adapts to any situation from spotlighting to area task lighting. Suddenly, one of them stopped working. The NEBO 6907 SWYVEL Flashlight is ideal for both professional and DIY environments. 3. Pest & Solar Lights NEBO Franklin Swivel 600 Lumen Rugged Series Flashlight; NEBO Franklin Swivel 600 Lumen Rugged Series Flashlight. Has a bright 300 lumen spot light and a convenient 30 lumen red light. It has five light modes from 50 to 1000 lumens, a magnetic base for mounting on metal surfaces, and a removable pocket clip. 8-ounce anodized aluminum chassis provides four different lighting The Redline FLEX flashlight utilizes Flex-Power technology to charge via micro USB and provides 6x adjustable zoom with 4 light modes (high, low, strobe, turbo). 5 hours / 18 meters, Red light High (40 lumens Dec 18, 2020 · Heeey YouTubers! Thanks 4 Watching :) Please LIKE & SUBSCRIBE!Here is the link to the NEBO website---- https://www. The included battery allows for up to 24 hours of operation in between charges. NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for 500 Lumen COB LED Work-Light and Flashlight, Red Light Mode and Red Flashing Light Mode, 4x Adjustable Zoom, Magnetic Base, No Need to Buy Batteries SLYDE KING is Rechargeable - NEBO 6726 Slyde King 4. This video covers the following issues:Common Battery ProblemsSwitch troubles The FRANKLIN™ SLIDE is a high-powered 500 lumen C•O•B LED flashlight and work light, retractable clip, and powerful magnetic base. Shop bright LED flashlights, headlamps, lanterns, work lights, and more at NEBO. $27. Its unique swivel design allows the light’s head to rotate into a forward-facing light, perfect for various working conditions. Color: Black, Fabric/Material: Anodized aircraft-grade aluminum, Beam Color: White/Red, Light Output: 500 lumens, Charger Type: USB, Bulb Type NEBO BAT LIGHT 1500 Tactical Flashlight<br /><br /> The BAT LIGHT® 1500 is a tactical flashlight designed to excel in low visibility and personal defense situations with a 1500 lumen spotlight and a Defensive Strobe mode that can momentarily disor Mar 5, 2018 · Nebo Big Cryket Spotlight flood light and red light. Sep 26, 2020 · If you need white light and red light function in a mini-area light format, I would suggest something like the Fenix CL20R as a good alternative to a NEBO (well, at least the NEBO I have). NEBO Franklin Swivel Taskbar 500 Lumen COB Work Light and Flashlight with 7 Light Modes, Great for Emergencies and Signaling ; LIGHT MODES: Flashlight High (200 lumens) - 8 hours / 75 meters, Flashlight Low (60 lumens) - 24 hours / 50 meters, Work light High (500 lumens) - 2. Mar 16, 2023 · NEBO SWYVEL 1000 Lumen USB Wireless Rechargeable Aluminum Flashlight: Compact 90 Degree Rotating Swivel Head Work Light; 5 Light Modes; Pocket Clip Magnetic Base for Hands-Free Lighting -Black The best flashlight is the one that's always with you. SKU: NEB-FLT-1023. Qualified orders eligible for FREE S&H and FREE RETURNS. 7 out of 5 stars About this item . About this item . When a Li-Ion refuses to charge like that after being fully discharged, it's a good sign that the battery has been over-discharged and the protection circuit in the battery has tripped. Always use an original NEBO charging cable when charging your NEBO flashlight. 5 hours / 31 meters, Work Light Low (150 lumens) - 14. The red COB light can shine up to 75 meters away, making it perfect for distress signaling or roadside emergencies. 5 out of 5 stars 455 The SWYVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo Mode. Sep 24, 2021 · An easy way to repair your light if it isn't charging. The compact size and steel clip provide convenient carry, and the 90 degree swivel head and magnetic base give you hands-free light in any direction. com. 6061 *Hours of operation Monday - Friday 8:00 AM - 5:00 PM (CST) As you have tried replacing the batteries, your DIY choices are limited. I was very satisfied with them for quite some time and had no issues. NEBO LARRY POCKET WORK LIGHTS. #biglarryflashlight #nebo #disassembly #switch Nebo Tools™ SWYVEL Rechargeable EDC Flashlight with 90º Swivel Head The SYWVEL is a versatile, rechargeable flashlight that features Smart Power Control, which smoothly transitions the 5 light modes, including the 1,000 lumen Turbo mode. With its Turbo mode, it emits an impressive 600-lumen beam that effortlessly cuts through the darkness. This is a flashlight that changes orientation by 90 degrees, allowing you to have the led Jun 1, 2020 · Maximum Compatible Light Source Wattage 3. NEBO Redline 6000 lm Black LED Rechargeable Flashlight. Thanks for reading, and happy charging! 5 Additional Tips and Tricks. 1-48 of 608 results for "flashlights nebo" Rechargeable 600 Lumen 90 Degree Swivel Head Flashlight. 99 $ 27. Feb 24, 2023 · So if your Nebo flashlight isn’t working correctly, don’t worry – there are ways to fix it! This Video will show you how to fix a nebo flashlight. The magnetic base and steel clip provide convenient hands-free lighting. The NEBO Franklin Taskbar 500 Lumen COB LED Gray Handheld Flashlight and Work Light has seven light modes, a direct-to-red feature, and power memory recall. Apr 27, 2021 · Full disassembly and reassembly of the Nebo Big Larry magnetic flashlight. The only problem is, the site says the battery is only for two specific models, neither of which is out 12K. ghgwl kkepg gvhvv upg oelxs imwur rciyv gbgzg qpnahpt jyu