Manufacturer model:SR30.Long battery life up to 20 hours in light mode, up to 25 hours in single radar mode; equipped with a type C charging port; automatically reduce brightness when the battery is low; automatically sleep/wake up. 【7 working modes】Solid mode, Peloton mode, Pulse mode, Day flash mode, Night flash mode, Single Radar mode; to meet different riding scenarios; 【Intelligent reminder】Built-in high-precision sensor, automatically highlight when brakes, when vehicle approaches from behind, it provides visual and audible alarms to the rider through the display terminal; and high-frequency flashes to remind vehicles approaching within 220° and 1 mile behind; 【After Sales Service】Your satisfaction is our top pursuit. 【Long battery life】Up to 20 hours in light mode, up to 25 hours in single radar mode; equipped with a type C charging port; automatically reduce brightness when the battery is low; automatically sleep/wake up Please feel free to share your questions and concerns with us. iGPSPORT SR30 Radar Tail Light Smart Rear Bike Light Brake Tail Light IGPSPORT SR Mini Rear Bike Light With Vehicle Radar Bike Radar