Compact and lightweight body with up to 150 lumen output in Daytime Hyperflash or 20 lumens constant Snap Mounting System allows riders to place rear lights on many locations in both horizontal and vertical orientations 3 LEDs that offer 300deg illumination Long rear beam projection OptiCube lens technology 4 modes (Constant / Flashing / Daytime Hyperflash / Group Ride) USB C rechargeable Li-ion battery Mode memory and low battery indicator