Smart Brake Sensing Cycling Light Waterproof Led Bicycle Flash Rear Light USB Charge MTB Road Bicycle Lamp Bike Tail Light

Cycling is your hobby? Check this item for you to customize your bicycle. Do you wanahavit? Tail light Introductions: Turn on or off, Press & hold for 1.5 seconds. Function mode, steady, fast flash, forward flash, rapid flash, running flash Brake Introduction: When riders brake during riding, tail lights sense it and auto-flash for 6 seconds to alert the driving cars behind The tail light has a light-sensing mode. When turned on, it automatically becomes bright in dark area, but not in bright area. The tail light has an auto-sleeping mode. When the bike stays still for 40 seconds, it automatically goes into sleeping mode; when senses a vibration, it automatically turns on the light. (With light-sensing mode, it does NOT turn on in bright area.) product information: Size, 68mm long, 28mm wide, 25mm high Weight: 62 g (Contain the packaging) Material: high strength PC material. Battery: 3.7V 500mA Charging Time, 2h Usage Time : Steady 10h, fast flash 15h, forward flash 18h, rapid flash 15h, running flash 20h USB charge coil, 25cm 1A Charging ways, 5V adapter, computer, USB power bank Attention: The sensor in the tail light can detect the direction automatically. So, to make sure of a more precise brake detection, the light must be mounted to the bike before use!