Features 1. Radar detection range up to 140M, providing enhanced safety by monitoring the surrounding environment and alerting you to potential hazards well in advance . 2. Eye - catching flashing lights with max 80 LED lumens , providing great visibility for both daytime and nighttime riding 3. Built - in motion sensor for brake detection and auto on - off function when activated 4. Special lens design to increase your side visibility when crossing road 5. Long battery life with an extended battery runtime of up to 19 hours Specifications LED : high - efficiency LED Battery :1400mAh/3.7V rechargeable Lithium - ion battery Dimensions :99mm( L )*40mm( W )*26.8mm( H ) Weight :70g Package included 1*NT201 Radar Tail Light 1*round and aero seat post mount 1*USB-C charging cable.
eBay