Smart Bright LED 800 Lumen Bike Light

800 Lumens output Cree High-Power LED Panasonic lithium-ion rechargeable battery 4 modes: High(2.0h)/ Medium(5.0h)/ Low(9.0h)/ Superflash(40h) USB charging(5.0h) Charging: blue flash; Charging completed: blue steady Simple rubber bracket IP66 rating Aluminum housing as high efficiency heat sink