Mssugar Rear Bike Light Smart Bike Tail Light Back Light Bike Flashlight Rechargeable With Brake Sensing Waterproof Rear Bike Light Smart Led Bicycle Flashlig

Smart bike rear light equipped with a light sensor and gravity sensor. In auto status, mode can be automatically switched according to the ambient brightness day or night. It will maintain a brightness of 10 lumens for 3 seconds when braking is detected and return to the original mode after braking.The light is soft and not dazzling, making your riding safer.Rechargeble – built in a micro USB interface for charging this bike tail light (USB cable included). Please charge it when the indicator light turns red. It will turn green when fully charged, battery life is up to 66 hrs.Manual & automatic mode – after unscrewing the back cover, manual mode and automatic mode can be switched at will. In manual mode, three modes can be switched according to riding environment. In auto mode, when power on or switch the mode at daytime, it will go out after 3 seconds. The light will go out once you keep stationary more than 120 seconds at night.Modes introduction three modes under manual Mid flashing (5LM/48H)/ low steady (2LM/12H)/ low flashing (2LM/66H). One mode under auto – 10 lumens high brightness for 3 seconds when braking. Rechargeable lithium battery 350mAh.Charging time about 2.2hrs, green light means full charge.Mount & remove easily – we provide two installation styles, Saddle mounting bracket and adjustable silicone strap. You can either install it on saddle or seat post. CNC technology, high-quality aluminum alloy material, Waterproof level IPX5.