Smart Bike Tail Light - USB Rechargeable Brake Sensing LED Rear Light

• [ SMART BRAKE SENSING & EASY to INSTALL ] - The bike tail light has smart sensor chip, it acts like a brake light when you slow down, ultra-bright for 5 secs lights warning back rider to enhance your safety. Comes with 2 mounts: metal rigid mount for under seat or rubber band type mount for seat post and quick release. It will suit for most of bike: like road mountain bike beach cruiser or scooter.
• [ FOUR LIGHT MODES & HIGH LUMEN LED ] - This rear bike light has 4 light modes for your choice, which can be toggled easily through with the center button. (1)Normal Flash Mode, (2)Breathing Flash Mode, (3)Fast Flash Mode, (4)Steady On Mode, the modes are well balanced to a ride's needs. High lumen COB Led bike taillight makes you more visible, The bike light is bright enough to be seen day and night.
• [ AUTO ON/OFF for SAVING BATTERY ] - This Smart bike rear light including Motion Sensor and Light Sensor, auto off when detect in no motion after 30 secs . Once shake it or detect the bike is moving, the bike back light will auto on again.(auto turn on or off in mode 1 or 2) NOTE: 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. (Brake sensing is always ON in all of the modes.).
• [ LONG BATTERY LIFE & POWER INDICATOR ] - The bicycle light USB rechargeable built-in 400mAh Li-ion batterty, can lasting 50 hours when fully charged. Four blue breathe indicator lights, shows the remaining charge, each shows 25% capacity batterty , remind you to charge in time.
• [ ALUMINUM ALLOY SHELL & IPX6 WATERPROOF ] - This bicycle brake light shell is made of high grade aluminum, has a nice small profile and awesome metallic appearance. It is IP65 Waterproof to withstand all types of weather conditions. ROCKBROS GUARANTEE: 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.

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