Planet Bike Blinky Squared Ultra Taillight. Features: Designed for riding in broad daylight or after dark this compact light features a 1.25" square screen and 16 LEDS to ensure cyclists are seen from every angle Powered by a fast charging 300 mAh lithium-polymer battery that recharges in just 2 hours via USB-C Includes rubberized stretch straps secure the lights Specs: Model:Blinky Squared Ultra Taillight Lumens:50 Modes:5 Rechargeable:Yes Color:Black/Red Weight:19g