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🚴♂️ Light up your ride, brake smarter, ride safer!
The G Keni Smart Brake Sensing Rear Bike Light combines cutting-edge brake detection with ultra-bright 120 lumen COB LEDs visible up to 1000 meters. Featuring four customizable light modes and smart auto sensors, it adapts seamlessly to your riding conditions. Its durable IPX6 waterproof aluminum body and USB-C rechargeable 400mAh battery provide up to 50 hours of reliable, weatherproof illumination—perfect for commuters, road cyclists, and mountain bikers who demand safety and style on every ride.





| ASIN | B07W4PGHK7 |
| Auto Part Position | Rear |
| Best Sellers Rank | #29,671 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #33 in Bike Taillights |
| Brand | G Keni |
| Brand Name | G Keni |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 2,316 Reviews |
| International Protection Rating | IPX6 |
| Item Dimensions L x W x H | 1.57"L x 1.34"W x 1.34"H |
| Item Weight | 3 ounces |
| Light Output Maximum | 120 lumens |
| Manufacturer | K&K International Co.,LTD |
| Manufacturer Part Number | Q5 |
| Material | Aluminum, Plastic |
| Material Type | Aluminum, Plastic |
| Model Number | Q5 |
| Mounting Type | Seat Mount |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of settings | 4 |
| Power Source | Battery Powered |
| UPC | 730964003983 |
| Warranty Description | 1 Year |
| Water Resistance Level | Waterproof |
A**G
After four years still my favorite tail light!
Great tail light! I am four years n with this light and I’m ordering more only because I love it! Looks great on the bike and works flawlessly! Easy to turn on while riding. Holds a charge very well! Bright! Tucked away under the seat! Super solid mount. Better than any other bike mounted rail light I have used. Not what it needs to be and no more. Perfect design. Cheers! Buy some while you can!
S**T
Took them for a spin... totally a 5 star product.
Added this light to the back of a Propel Endeavor S - it was recommended by an Endeavor Pro owner/rider. It's fancy no doubt.. the modes are well balanced to a ride's needs. Very nice touch to have 4 tiny tiny tiny lights inside the red ring as a battery gauge. The main feature that makes this little guy shine -- the brake sensor -- and it does it very well from what I was told when driving past friendships (bc I can't actually see the back of the board while riding) - Built quality -- it's solid.. very nice.. personally, I think devices like these should have bumpers.. this is the type of tech/gear that inevitably will take inconsistent handling, some abuse while removing to charge - then possibly sits in a basket along other smaller gadgets till it needs to go back on the board/bike.. but ehh - it produces a very nice consistent red light - it performs as describe... and I really enjoy having it on the board while I ride. Hope this helps... #Recommend
R**S
Seems Like a Very Good Tail Light
This is a nice bright light, easily visible from a distance in daylight over a reasonable range of angles from the rear. The mount is very good. It is solid and secure and about as high on the bike as anything can be. It is well constructed, with an aluminum body and aluminum screw-in receptacle on the mount. The button is firm with distinct tactile feedback that you have pressed it. The battery strength indicator lights are very small but visible. There are four modes, only two of which I use. The first two have auto-on and off features that I don't trust and flashing patterns I don't like. The third one has a an eye catching strobe that I normally use to be visible to cars and the fourth one is steady on for when someone is riding behind you and the strobe would be distracting. The brake light feature works pretty well, which is also good for when someone is riding behind you. I like it so much I bought a second one for my daughter's bike.
W**L
Pretty good tail light
This clever and smart tail light for bikes is actually pretty cool and it does work as stated in the instructions. The light is certainly bright enough to alert any normal drivers behind you. I did test mine right after the easy install and the only complaint I have is that the brake light feature does not stay on for five seconds like the video, instructions indicates. My brake light does go ON when braking, but it goes OFF after about a second and a half, maybe two seconds at most. I find this way too short to alert any driver from behind. I gave it four stars because of this one glaring but important feature.
A**9
Rear bike light
Arguably the best bike light I’ve ever owned. Very impressed.
K**T
Don't get run over!
Very solid, bright, lightweight, rechargeable with decent battery life and an excellent mounting system. Love it!
H**A
Reliable and stylish
Excellent light. Long lasting, stylish and bright.
J**N
Nice design and materials; seems like a good buy --- time will tell...
Apr 14, 2022: I like the build quality (metal) of the light. I charged it for about an hour before putting it on the bike. The main body of the light is threaded and screws into the socket of your choice. It has an o-ring which should keep water from getting to the USB connection inside while it is in its socket. I installed the seat-mount bracket in about 5 minutes. An allen wrench is included. When attaching the bracket under the seat, I didn't remove the bracket arms. I only loosened the bracket arms an equal amount on both sides until they fit, then tightened them. Though I didn't use the post-mount bracket, it seems reasonably durable, and I might adapt it for alternate placement while using the rack on the back of my bike. I'm adding photos that show details I would have found useful, including the English portion of the instruction manual. To adjust the brightness: from OFF, press 4 times to get to CONSTANT (no flash) mode. While in that mode, press and hold the power button. While holding it, the brightness level will cycle between LOW, MEDIUM & HIGH brightness. I'll include photos of the three levels. It can be done in the other modes, but it's easier to see the change in CONSTANT MODE. Edit: the photos don't appear in the order I put them which would have shown the three brightness levels side-by-side. June 18, 2022: In response to a question about a clip-on option, I'm adding a few more photos. The post-mount base can be removed from the silicone/rubber strap and used as a clip. Apr 10, 2023: Purchased 1 year ago and still working well; a very good buy. Jul 23, 2023: Add photos of light mounted on cargo bag.
C**N
Works well, provides some safety assurance
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.
J**A
Buen material
Buena calidad
G**N
bonne qualitee prix
bonne qualitee
M**R
Great - works well
Well worth it - light on auto setting last a month with out charging - riding upto 1 hour per day in twilight
L**O
Accesorio ideal
Muy buen accesorio, y la batería muy durable
Trustpilot
1 month ago
1 day ago