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

• [ 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.

Product Description Upgraded Smart Brake Sensing Bike Tail Light, Cycling Safety Light Sensing Rear Light (Aluminium Alloy Shell) Features: Lamp Beads: COB high light source Battery: lithium-polymer rechargeable, 400 mAh Battery Type: Polymer lithium battery inside Visible Distance: 150 meters Material of Shell: Aluminum Alloy Weight & Size: 53 g / 40 x 34x34mm Standby Time: 3 Months Charging Time: 3-5 hours NOTICE: Please full in charging before the first usage. The Upgraded Smart Bike Tail Light Including 4 Modes! Mode 1: Normal Flash Mode Mode 2: Breathing Flash Mode Mode 3: Fast Flash Mode Mode 4: Steady On Mode Buying Options Buying Options Buying Options Buying Options Buying Options Customer Reviews — — — — — 4 Modes Brake Sensing Light Sensing Motive Sensing Using Time Daytime Use Mode 1 ✓ Auto On/Off Auto On/Off 50 hours Auto off Mode 2 ✓ Auto On/Off Auto On/Off 40 hours Auto off Mode 3 ✓ Keep Flashing Keep Flashing 40 hours ✓ Mode 4 ✓ Keep On Keep On 20 hours ✓ THREE Main Highlights (NOTICE: The Auto ON/OFF Features only works on Slow Flash Mode & Breathing Light Mode.) Smart 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) Intelligent Light Sensing Rear Bike 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. Auto ON/OFF 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. Ultra Bright Bike Taillight High brightness, visibility up to 150 meters. The tail light emits an eye-catching beam for warning the back rider or car.Don't worried about being knocked over by others. Smart Bicycle Tail Light Adopted of floodlight ptical lampshade, the brightness increase by 55%. Four power indicator to show the battery left Aluminum alloy button for nice touch. IPX6 Waterproof Bicycle Rear Light Adopted with waterproof material, the bike rear light it's IPX6. Can be soak in the water, withstand the terrible weather. Keep the water from any direction and will not enter into inside. USB Rechargeable Bicycle Back Light Just uninstall it from the mount, and take it to charging. Power by the USB cable Such as computer, power bank and car charger. Normal Flash Mode can up to 50 hours. Breathing Flash Mode can be up to 40 hours. Fash Flash Mode can up to 40 hours. Steady On Mode can be up to 20 hours. Brake Bike Taillight Aluminum Alloy Anti-theif Bike Alarm with Remoted Brake Bike Back Light Auto On/Off 7 Colors Flashing Bicycle Taillight Add to Cart Buying Options Buying Options Buying Options Customer Reviews 4.5 out of 5 stars 2,170 4.4 out of 5 stars 1,257 — — Bike Alarm x ✓ x x Brake Sensing ✓ x ✓ x Light Sensing ✓ x ✓ x Auto ON/OFF ✓ x ✓ x Light Modes 4 3 4 5 Runing Time 20-50 hrs 30hrs-60hrs 12-40 hrs 8-50 hrs Battery Capacity 400mAh 800mAh 700mAh 250mAh