---
product_id: 164528382
title: "Circle Smart Bike Brake Tail Light"
brand: "g keni"
price: "6822 som"
currency: KGS
in_stock: true
reviews_count: 12
category: "G Keni"
url: https://www.desertcart.kg/products/164528382-circle-smart-bike-brake-tail-light
store_origin: KG
region: Kyrgyzstan
---

# 120 lumens ultra-bright LED output IPX6 waterproof for all-weather rides Smart brake sensing for instant safety Circle Smart Bike Brake Tail Light

**Brand:** g keni
**Price:** 6822 som
**Availability:** ✅ In Stock

## Summary

> 🚨 Ride Smart, Ride Bright — Never Blend Into the Night!

## Quick Answers

- **What is this?** Circle Smart Bike Brake Tail Light by g keni
- **How much does it cost?** 6822 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/164528382-circle-smart-bike-brake-tail-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

- • **Auto On/Off Sensor:** Smart motion and light sensors save battery by powering off when idle and activating instantly when you ride.
- • **Adaptive Light Modes:** Choose from 4 dynamic lighting modes including Normal, Breathing, Fast Flash, and Steady On to match your riding vibe.
- • **Rugged & Sleek Design:** Durable aluminum alloy shell with IPX6 waterproof rating, perfect for any weather or terrain, backed by a 12-month warranty.
- • **Brake-Activated Brightness:** Automatically switches to high alert mode for 5 seconds when braking, ensuring you're seen and safe.
- • **Long-Lasting Rechargeable Battery:** Up to 50 hours runtime with a 400mAh Li-ion battery and clear 4-level charge indicators—never get caught in the dark.

## Overview

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.

## Description

desertcart.com : 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 : Sports & Outdoors

Review: Reliable and stylish - Excellent light. Long lasting, stylish and bright.
Review: 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!

## Features

- [ Smart Brake Sensing Bike Tail Lights ] - This smart rear bike light can automatically switch to high light mode when it 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 Modes High Lumen LED Rear Bicycle Light ] - The Rear bicycle light have 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.
- [ Light Sensing Auto ON/OFF for Battery Saving ] - Our 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
- [ Brightness Adjustable Bike Back Light ] - 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 Waterpoof ] - 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07W4PGHK7 |
| Auto Part Position | Rear |
| Best Sellers Rank | #38,336 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #45 in Bike Taillights |
| Brand Name | G Keni |
| Color | Red |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,302) |
| 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 |

## Product Details

- **Brand:** G Keni
- **Color:** Red
- **Item Weight:** 3 Ounces
- **Light Output Maximum:** 120 Lumens
- **Material:** Aluminum, Plastic
- **Mounting Type:** Seat Mount
- **Number of settings:** 4
- **Power Source:** Battery Powered
- **Product Dimensions:** 1.57"L x 1.34"W x 1.34"H
- **Water Resistance Level:** Waterproof

## Images

![Circle Smart Bike Brake Tail Light - Image 1](https://m.media-amazon.com/images/I/7106EjtMgML.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable and stylish
*by H***A on March 17, 2026*

Excellent light. Long lasting, stylish and bright.

### ⭐⭐⭐⭐⭐ After four years still my favorite tail light!
*by A***G on April 20, 2025*

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!

### ⭐⭐⭐⭐⭐ Seems Like a Very Good Tail Light
*by R***S on June 21, 2021*

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.

## Frequently Bought Together

- 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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**Shop now:** [https://www.desertcart.kg/products/164528382-circle-smart-bike-brake-tail-light](https://www.desertcart.kg/products/164528382-circle-smart-bike-brake-tail-light)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-05-01*