

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.
🚨 Ride Smart, Ride Bright — Never Blend Into the Night!
The G Keni Smart Brake Sensing Rear Bike Light is a cutting-edge, rechargeable tail light featuring 120 lumens of ultra-bright LED output, smart brake detection that boosts visibility instantly, and adaptive light modes for personalized safety. Its IPX6 waterproof aluminum alloy design ensures durability in all conditions, while intelligent auto on/off sensors maximize battery life up to 50 hours. Perfect for professional cyclists and urban commuters who demand style, safety, and smart tech in one sleek package.






| ASIN | B07W4PGHK7 |
| Auto Part Position | Rear |
| Best Sellers Rank | #34,654 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #44 in Bike Taillights |
| Brand Name | G Keni |
| Color | Red |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,299) |
| 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 Type | Aluminum, Plastic |
| Model Number | Q5 |
| Mounting Type | Seat Mount |
| Number of settings | 4 |
| Power Source | Battery Powered |
| UPC | 730964003983 |
| Warranty Description | 1 Year |
| Water Resistance Level | Waterproof |
H**A
Reliable and stylish
Excellent light. Long lasting, stylish and bright.
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!
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.
R**R
Bright and long lasting
These are no joke the best rear lights I've purchased. All of my other rear lights have broken due to jumping or the power button would quit working. These lights are honestly bulletproof. I've dropped them on the concrete floor and kicked them with my foot across the floor instead of slowing down the fall. I usually ride around 20 hours a week. I just leave the lights on the 1st setting and they seem to last for weeks. They've never actually died on me but I have seen them get down to 1 dot. Since I mentioned the dots it's a really nice system. There are 4 blue lights that tell you how much juice you have. Just a simple look and you'll know if you're good or not I thought the brake light was going to be a gimmick but it's a really nice feature. Folks riding behind me can see when I'm slowing down. Has come in handy on a few urban rides. The reason I gave the product a 4 is because of the metal mount. It didn't fit my bike. I have an Ergon SM E Pro and the mount needs to be maybe another 1/16" more of adjustment and I would have been fine. My wifes is just tight enough to be snug on her factory Kona seat. A bit of force and I can make it slide. She would have also benifited from a bit more adjustment to ensure the light didn't fall off while jumping on night rides. The rubber mount does work well though. After a few bigger jumps I had to put just a bit of epoxy on mine because it popped off the rubber mount. After doing that it hasn't moved.
B**E
Good Visibility, Good Battery Live, Nice Design
This is a very nice rear cycling blinker with excellent battery life. I originally bought this item two years ago. Just replaced it after a battery failure by buying the same unit. I ride pretty much every day, weather permitting, so the two years of reliable performance was, in my opinion, very good. It is easy to mount, easy to take on and off to charge, and is very visible.
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
E**Y
THE BEST TAILLIGHT EVER!
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.
C**N
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.
L**O
Muy buen accesorio, y la batería muy durable
G**N
bonne qualitee
M**R
Well worth it - light on auto setting last a month with out charging - riding upto 1 hour per day in twilight
R**E
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.
Trustpilot
1 week ago
1 month ago