--- product_id: 233010290 title: "G Keni Smart Brake Sensing Rear Bike Lights, Auto Light Sensing Bike Tail Light, IPX6 Waterproof, Ultra Bright LED Taillights, Rechargeable Safety Road Back Bicycle Lights for Night Riding" brand: "g keni" price: "€ 54.43" currency: EUR in_stock: true reviews_count: 13 category: "G Keni" url: https://www.desertcart.hr/products/233010290-g-keni-smart-brake-sensing-rear-bike-lights-auto-light store_origin: HR region: Croatia --- # 4 light modes with adjustable brightness IPX6 waterproof for all-weather rides 105-115dB anti-theft alarm with remote G Keni Smart Brake Sensing Rear Bike Lights, Auto Light Sensing Bike Tail Light, IPX6 Waterproof, Ultra Bright LED Taillights, Rechargeable Safety Road Back Bicycle Lights for Night Riding **Brand:** g keni **Price:** € 54.43 **Availability:** βœ… In Stock ## Summary > πŸš΄β€β™‚οΈ Light up safety, silence the thieves, own the night! ## Quick Answers - **What is this?** G Keni Smart Brake Sensing Rear Bike Lights, Auto Light Sensing Bike Tail Light, IPX6 Waterproof, Ultra Bright LED Taillights, Rechargeable Safety Road Back Bicycle Lights for Night Riding by g keni - **How much does it cost?** € 54.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/233010290-g-keni-smart-brake-sensing-rear-bike-lights-auto-light) ## Best For - g keni enthusiasts ## Why This Product - Trusted g keni brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Brake Smart, Ride Safer:** Automatic ultra-bright brake sensing tail light activates instantly when you slow down, ensuring you're seen from afar and reducing accident risks. - β€’ **Built to Brave the Elements:** IPX6 waterproof rating and USB rechargeable 800mAh battery combine durability and convenience for reliable performance rain or shine. - β€’ **Effortless Power Management:** Smart motion and light sensors auto on/off to save battery life, so your light is always ready when you hit the road or night ride. - β€’ **Illuminate Your Ride Your Way:** Choose from 4 dynamic light modes including Normal Flash, Breathing Flash, Fast Flash, and Steady On with customizable brightness to match your style and visibility needs. - β€’ **Stay One Step Ahead of Thieves:** Loud 105-115 decibel alarm with remote control up to 50m deters theft instantly, giving you peace of mind wherever you park. ## Overview The G Keni Smart Brake Sensing Rear Bike Light is a cutting-edge, rechargeable tail light featuring 4 adjustable light modes, a powerful 105-115dB anti-theft alarm with remote control, and smart brake sensing technology. Designed for professional cyclists and urban commuters, it offers IPX6 waterproof protection and intelligent auto on/off sensors to maximize battery life and safety during night rides. This compact, easy-to-install device ensures your bike stands out while deterring theft, making it an essential upgrade for any serious rider. ## Description desertcart.com : G Keni Smart Anti-Theft Bike Alarm, Bike Tail Light Rechargeable, Warning Electric Horn, Bike Finder with Remote, IPX5 Waterproof Electric Mountain/City Bikes Accessories : Sports & Outdoors Review: Great theft deterrent. - Very happy with this purchase. Functions as promised. Alarm is very sensitive and extremely loud. Under seat mounting was a bit difficult, but quick removal by thieves would prove difficult as well. They do include a post mount as if you need a simpler option. Light is bright and horn is effective with 3 different sound options. Overall great product. Update: purchased again for new bicycle. Pros: Upgraded model has new features including more horn sounds, adjustable volume and alarm sensitivity and light sensing feature that will automatically turn on tail light at night when bike is in motion . Con: New model uses thumbscrew instead of allen screw to secure light to mounting bracket making it easier to remove. I prefer the more secure allen screw. Review: Excellent Product - It was difficult to attach at first, but fortunately the second alternative (the "third time") was the charm, and it was easy. This light/alarm is an incredible buy, maybe the best in all of my desertcart purchases. The alarm is a loud 115 decibels (just shy, I think the product info related, of the noise required to cause permanent hearing damage, and I believe it), but it is not so sensitive that it goes off unless someone is definitely messing with your bike (in my case, an expensive ebike). And everything works, even the motion-sensor brake light! For 20-or-so bucks, this alarm is a steal! ## Features - [ 4 LIGHT MODES & ADJUSTABLE BRIGHTNESS ] This bike alarm tail light have 4 light modes, Normal Flash/Breathing Flash/Fast Flash/Steady On, you can change any modes that you like with the remote control or just press the button on the bike tail light to switch the modes.The brightness is adjustable, in the steady on mode, just long press the button to adjust the brightness that you need. - [ ANTI-THEFT ALARM BIKE TAIL LIGHT ] The cycling security alarm can make a loud sound(105~115 decibels) to draw people's attention and deter the thieves. Distance in the open, the remote control operating distance up to 50m(164 feet), easily find your bike location through light or sound. pls note, it does not contains a GPS tracker. - [ SMART BRAKE SENSING ] Designed with the brake sensor, Automatic ultra-bright brake light will automatically light up after braking. The bicycle light is super bright and highly visible from a distance, really catch attention to enhance your safety. The brake sensor function works on all the light modes. - [ 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. - [ OTHER FEATURES & WARRANTY ] 1, USB rechargeable. 2, 800mAh Super long battery life. 3, fast install. 4, High lumen brightness. 5, IPX5 Waterproof. And we offer ONE YEAR WARRANTY, If you have any questions or problems, feel free to contact us at any time. We will help you to solve the problems or reship a new one for you. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08G1JWCNV | | Auto Part Position | Rear | | Best Sellers Rank | #45,609 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #59 in Bike Taillights | | Brand | G Keni | | Brand Name | G Keni | | Color | Red | | Customer Reviews | 4.5 out of 5 stars 376 Reviews | | International Protection Rating | IP65 | | Item Dimensions L x W x H | 1.8"L x 2"W x 2.2"H | | Item Weight | 0.18 kg | | Manufacturer | K&K International Co.,LTD | | Manufacturer Part Number | US-A8 | | Material | Plastic | | Material Type | Plastic | | Model Number | A8 | | Mounting Type | Seat Mount | | Number of settings | 4 | | Power Source | Battery Powered | | Water Resistance Level | Waterproof | ## Product Details - **Auto Part Position:** Rear - **Brand:** G Keni - **Color:** Red - **Item Weight:** 0.18 kg - **Material:** Plastic - **Mounting Type:** Seat Mount - **Number of settings:** 4 - **Power Source:** Battery Powered - **Product Dimensions:** 1.8"L x 2"W x 2.2"H - **Water Resistance Level:** Waterproof ## Images ![G Keni Smart Brake Sensing Rear Bike Lights, Auto Light Sensing Bike Tail Light, IPX6 Waterproof, Ultra Bright LED Taillights, Rechargeable Safety Road Back Bicycle Lights for Night Riding - Image 1](https://m.media-amazon.com/images/I/71hc5Ro6X3L.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great theft deterrent. *by T***L on January 9, 2021* Very happy with this purchase. Functions as promised. Alarm is very sensitive and extremely loud. Under seat mounting was a bit difficult, but quick removal by thieves would prove difficult as well. They do include a post mount as if you need a simpler option. Light is bright and horn is effective with 3 different sound options. Overall great product. Update: purchased again for new bicycle. Pros: Upgraded model has new features including more horn sounds, adjustable volume and alarm sensitivity and light sensing feature that will automatically turn on tail light at night when bike is in motion . Con: New model uses thumbscrew instead of allen screw to secure light to mounting bracket making it easier to remove. I prefer the more secure allen screw. ### ⭐⭐⭐⭐⭐ Excellent Product *by C***S on January 22, 2024* It was difficult to attach at first, but fortunately the second alternative (the "third time") was the charm, and it was easy. This light/alarm is an incredible buy, maybe the best in all of my Amazon purchases. The alarm is a loud 115 decibels (just shy, I think the product info related, of the noise required to cause permanent hearing damage, and I believe it), but it is not so sensitive that it goes off unless someone is definitely messing with your bike (in my case, an expensive ebike). And everything works, even the motion-sensor brake light! For 20-or-so bucks, this alarm is a steal! ### ⭐⭐⭐⭐ Great bicycle alarm *by S***N on June 19, 2025* After my bicycle was stolen from in front of the grocery store, I purchased a new bicycle and accessories. I do not need a light for the bicycle since I rarely ride at night, and I happened to stumble upon this product during my search for accessories (TBH, I didn’t even know you could get an alarm for a bicycle until I saw this product). I think I’ve used the light once in the past year that I have had this on my bicycle, and I cannot comment on the brake light function since it is mounted below my seat facing backwards and cannot be seen while riding. I can comment on the alarm function which is the sole reason I made this purchase, and I have found it very satisfactory. I know that an alarm is a theft deterrent and not a preventive, but I do feel that my bicycle is just that much more secure when locked up outside, especially when I ride to the grocery store where I had my old bicycle stolen. The battery lasts for several months (I have been using this product for more than a year and have only needed to recharge it once), and when the battery was running low, it made a unique noise when I turned it on, but I did not recharge it until it stopped working altogether. The mount is easy to install, and the light in held in place with a screw and is easy to remove but time consuming enough that a thief cannot simply remove the alarm after it begins to sound. The alarm itself is quite loud (I once had the misfortune of accidentally tripping the alarm), and the unit appears to be quite durable having had to withstand rain and harsh sun during this past year and has done so without any decline in its function. Now for the things that need improvement. It’s nice that the remote can be mounted to the handlebars so that I can turn the light on or sound the horn while riding, however, after parking my bike and turning on the alarm, there is no great way to carry it, and on more than one occasion, it has gotten lost in the bottom of my bag. They should mount a ring on the bottom of the remote and provide a clip that could be attached to a keyring so I could clip this to my keys while I’m shopping. Secondly, the mount was not designed for a seat the size of mine. The product comes with 2 types of mounts - under the seat or to the seat post. I have a narrow seat, and the under-seat mount was too wide to fit on the seat rails of my bicycle. I therefore mounted it to the seat post, but this mount was made for a larger diameter seat post, and I had to use a couple of pieces of styrofoam between the mount and my seat post to get a good fit. I also found that there was just barely enough room between the bottom of my seat and the top of the rack I have mounted to back wheel for this to fit, and trying to reach the screw to remove the alarm to recharge it meant performing a bit of a contortionist routine - fortunately I only had to do this once so far, and I probably should not complain about it as it adds to the security of the device. Because of the tight space where I have this mounted, the light is directed towards the ground as there is not enough room to turn it up that little bit more that is necessary for the light to be directed straight behind me (it’s a good thing I do not actually need the light itself). Despite its shortcomings, this is a very good product, and I would recommend this to anyone who needs to leave their bike unattended. ## Frequently Bought Together - G Keni Smart Anti-Theft Bike Alarm, Bike Tail Light Rechargeable, Warning Electric Horn, Bike Finder with Remote, IPX5 Waterproof Electric Mountain/City Bike Accessories - Lamicall Bike Phone Holder, Motorcycle Mount - Motorcycle Phone Holder, Handlebar Cell Phone Clamp, Scooter Phone Clip for iPhone 16 Pro Max/Plus, 15 Pro Max, S10, S20, More 4.7" to 6.8" Smartphones - 2PCS Car Stickers Warning GPS Tracker Alarm Bike Protected Motorbike Bumper 7x4cm (C) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/233010290-g-keni-smart-brake-sensing-rear-bike-lights-auto-light](https://www.desertcart.hr/products/233010290-g-keni-smart-brake-sensing-rear-bike-lights-auto-light) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-09-19*