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G Keni Smart Bike Tail Light, Brake Sensing Rear Lights, Auto On/Off, Waterproof, USB Rechargeable, Ultra Bright LED Warning Back Bicycle Flashlight, Cycling Safety Accessories

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$20.89

$ 9 .99 $9.99

In Stock

1.Style:1 Pack (aluminum Alloy Shell)


About this item

  • [ SMART BRAKE SENSING & EASY to INSTALL ] - Automatically switch to high light mode when braking, ultra-bright for 5 secs lights warning back rider to enhance your safety. You can mount it under the saddle with metal mounting bracket or mount to the seat post with adjustable silicone strap.
  • [ FOUR LIGHT MODES & HIGH LUMEN LED ] - There are 4 light modes for your choice, (1)Normal Flash Mode, (2)Breathing Flash Mode, (3)Fast Flash Mode, (4)Steady On Mode, enjoy your cycling as you wish, High lumen COB Led bike taillight makes you more visible, it's a perfect bike light for night riding.
  • [ AUTO ON/OFF for BATTERY SAVING ] - This Smart bike tail light including Motion Sensor and Light Sensor, it will be auto off when detect in no motion after 30 secs. Once touch it or detect the bike is moving, the light will auto on again. Also when you ride under the sunlight, the tailight will be auto off due to the light sensor is working, IF YOU LIKE TO RIDE IN THE DAYTIME AND NEED THE TAILLIGHT KEEP WORKING ALL THE TIME, please choose the mode 3 and mode 4 to avoid Light Sensor working.
  • [ BRIGHTNESS ADJUSTABLE & HIGH LUMEN ] - The brightness of this bike rear light is adjustable, Max to 120 Lumen,1000m Viewable, in the steady on mode, just long press the button to adjust the brightness that you need, it Built-in 400mAh Li-ion battery, it can lasting 50 hours (will be influenced by the brightness that you setting) runing time when fully charged. four blue indicator lights, each shows 25% capacity, No longer worry about forget to charge.
  • [ ALUMINUM ALLOY SHELL & IPX6 WATERPROOF ] - Made of aluminum alloy shell, this bike rear light has a nice touch and awesome appearance. It's waterproof/dustproof and shockproof, suitable for any harsh working environment. we guarantee a 12-month warranty, 30-day money back and 24/7 customer service to make it no risk for you to purchase this taillight.



Product Description

Upgraded Smart Brake Sensing Bike Tail Light, Cycling Safety Light Sensing Rear Light (Aluminium Alloy Shell)

Bike Taillight

The Upgraded Smart Bike Tail Light Including 4 Modes!

  • Mode 1: Normal Flash Mode (Runing Time: 95hrs)
  • Mode 2: Breathing Flash Mode (Runing Time: 55hrs)
  • Mode 3: Fast Flash Mode (Runing Time: 80hrs)
  • Mode 4: Steady On Mode (Runing Time: 24hrs)

NOTICE:

  • if you like to ride in the daytime and need the taillight to keep working all the time, please choose mode 3 and mode 4 to avoid Light Sensor working.
  • Please full in charging before the first usage.
  • The metal mounting bracket is a better choice than the rubber mounting bracket (100% stable)

Why Choose This Smart Bike Taillight?

bike lights front and back rechargeable

Brake Sensing Bike Tail Light

  • Automatically switch to High light mode when decelerating, ultra-bright for 5 secs lights warning back rider. (Bike Brake Light)
  • High lumen COB Led lights makes you more visible, visibility up to 150 meters.
  • Brake Sensing works on all the modes.

brake sensing bike light

Light Sensing Bike Rear Light

  • Under the weak-light circumstance, this bike tail light will detect and auto ON whenever the bike is in motion.
  • Under the High-light circumstance, this bike tail light will auto OFF.
  • Only works on Normal Flash Mode & Breathing Light Mode

led tail lights bicycle

Motion Sensing Bike Back Light

  • Auto switches off the bike rear light when no motion is detected within 30 seconds.
  • Auto switches on the rear bike light when detected in motion.
  • Only works on Normal Flash Mode & Breathing Light Mode
Bike Taillight

Full Aluminum Alloy Shell and Rack

  • The shell and rack made of full aluminum alloy, make this bike rear light more stable installation, Also with a nice touch and awesome appearance.
bike tail light auto on off

Power Indicator

  • Four blue indicator lights, each shows 25% capacity, No longer worry about forget to charge.
waterproof bike rear light

IPX6 Waterproof

  • Adopted with waterproof material, the bike rear light it's IPX6.
  • It's waterproof/dustproof and shockproof, suitable for any harsh working environment
Bike Taillight

Adjustable Brightness

  • In the steady on mode, just long press the button to adjust the brightness that you need.
  • Can be charged via USB cable such as computer, power bank and car charger.
bike light rear

Features:

  • Lamp Beads: COB high light source
  • Battery: Rechargeable, 400 mAh
  • Visible Distance: 150 meters
  • Material of Shell: Aluminum Alloy
  • Material of Rack: Aluminum Alloy+Plastic
  • Weight & Size: 53 g / 40 x 34x34mm
  • Standby Time: 3 Months
  • Charging Time: 3 hours

John Brown
Reviewed in the United States on March 6, 2025
This is a very well designed and executed product. Providing two separate mounting options (U-bracket and Silicon Band) is really good, and allows the light to be moved between two different bikes or locations with minimum fuss.Most importantly, the design of the mounts allows maximum flexibility. The light (quality machined aluminum) screws into a machined aluminum cup which is itself screwed into the mount with a pair of tiny 2mm machine bolts. In the case of my bike, I disassembled one of the mounts, removing the cup from the band, and then drilled, tapped and bolted the cup to the back of my bike basket. With a more cheapo light, this would not have been possible.
Aston
Reviewed in the United States on February 4, 2025
These are pretty cool brake lights. They have couple of different flashing lights, that makes night riding safe. The battery life is good. Suppose to be water proof, haven't rode in the rain yet. They are easy to mount on the frame. Price was reasonable.
Brian
Reviewed in the United States on February 4, 2025
Initial impressions: light has good brightness at night not quite bright enough for daytime visibility. Annoying restrictions limit how you use the modes. For example, slow blink and breathing mode must use auto on/off and the light gets disabled during the daytime. Fast blink and solid mode cannot use auto on/off but do not turn off during the daytime. This seems like a major oversight and defeats the whole point of an auto on/off feature, I have no idea why you would want to disable the rear light during the daytime even if it does save battery life.All modes still allow the light to brighten while braking and it's sensitive and actually works very well whether in daytime or night but it's frustrating that the light can only get very bright like this momentarily when braking.The auto on/off is too fast and shuts off after about 20 seconds of no movement. This seems like it could be bad at night if your light is constantly turning off when waiting at a standstill for longer than 20 seconds.note: the instructions are unclear and don't explain that you can change the three brightness levels by holding the button while in solid light mode. The only setting I found useful was the highest and the other two settings are too dim.These are just the issues I noticed but otherwise it is built quite well and appears solidly attached to the metal seatrail mount. If you don't mind being limited to just the fast blink and solid modes so that the light can be on at all times then it is a great rear light.
Adrian
Reviewed in the United States on February 23, 2025
I am very happy with this purchase. Mounting on the bike is easy, and the feature that turns on the light when the bike starts moving is actually quite useful. It also turns off the light when the bike has stopped moving for some time. I live in a cold climate (well below freezing), bike twice a day for 20minutes, and the battery lasts for at least a month, even though I leave it outside at those temperatures. Highly recommend this product, even if its pricier than other options.
Evan Cooley
Reviewed in the United States on February 12, 2025
This is simply the best bike taillight I’ve ever used. Most other tail lights on the market are cheap flimsy plastic pieces of junk. In contrast, this is solid aluminum housing with a bright light and an impressively battery life. I don’t have to charge it for weeks and I ride 5 to 10 miles every single day. The absolute best part is it turns on by itself with when you start riding and the brake light sensors accurate and actually turn on when you are breaking. This will be the last tail light you will ever buy.
Portho
Reviewed in the United States on November 4, 2024
So, I love this light for some very specific reasons: 1) the build quality seems very good - aluminum body and bracket; 2) big enough to give out enough lumens and multi-mode lighting; 3) rechargeable battery; 4) most importantly - which is why I bought it - I wanted something that I could semi-permanently screw/mount to my bike rack so I didn't have to worry about losing it, having to take it on/off and it would be there whenever I needed it. I was about to purchase the Blue Lug KOMA from another online retailer (I had waited 3 months for it to come back in stock) but it is smaller, less bright, less lighting modes and a lot more money - $50 with shipping!After looking around I found this light and thought - hoped - that I could retro fit it to bolt to my rack and it worked great. I had to remove the mounting braket with two tiny screws....BUT that wasn't easy - they are small, easy to strip, and they were probably lock-tited on there....but I got them out and the bracket off. If I hadn't been able to get them out, I would have just had to use it like any other strap-mounted light - which would have been fine, but not why I chose this particular light.Then all I had to do was to drill a small hole through the aluminum mounting base, and attach it to the rack - which is why I bought this light - the METAL base - so I could drill through it and not deal with any plastic crap mounted light. Did it void any warranty? Probably yup. Do I care? Nope - it is mounted exactly where I want and how I needed it, at a fraction of the cost of the KOMA. I will probably buy one or two more to put on my other bikes. I can't speak to the long-term durability, battery life or anything else (other people have already reviewed that), but for the price and my specific needs, this is a 6-star buy. See the photos for details....
LUIS ZAMUDIO
Reviewed in Mexico on October 31, 2024
Muy buen accesorio, y la batería muy durable
nhmtnbkr
Reviewed in the United States on October 20, 2024
I bought these lights for my road bikes, as a means to put a light on my saddle rails that could be seen over the top of my saddle bag and they work well for that. For times where I have a third bottle these come with a clip-on mount that is part of the strap assembly for mounting on the seatpost, which works well and securely for clipping onto the exterior spots of my saddlebags. Nice visibility to the various light sequences and love the braking warning for extra safety. Battery life is very good, I can get 3-4 30+ mph rides before a charge is needed. Hopefully they prove to be durable long-term.
Remylarouche
Reviewed in Canada on July 30, 2022
C'est une excellente petite lumière, éclaire bien, solide, et ça principal qualité elle éclaire plus fort quand on freine. Je me suis gardé une étoile du fait que j'aurais apprécié que cette lumière sur le mode lent, et sur respiration puisse allumé en plein jour.Je la recommande vivement.
Caitlyn O'Brien
Reviewed in Australia on February 1, 2022
Product works well, has good battery life and functions well. Happy with my purchase and would buy again. Safety on the roads is a layered and multilevel for me and my braking rear light has improved my visibility on the road.
Patrick
Reviewed in Canada on October 23, 2022
Hardware holds the seat frame well. Feels sturdy and is handy for anyone using a dropper seat post when a post mounted light will not work. Update* Replaced with Magicshine Seemee 200
Mark Miller
Reviewed in Australia on July 10, 2021
Well worth it - light on auto setting last a month with out charging - riding upto 1 hour per day in twilight
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