Cool Shiny Lightscastle T6 Water Resistant Xml-t6 3-mode 1600-lumen White LED Bike Light with Battery Pack Se Perfect fit for outdoor sports, such as camping, traveling, hiking and etc Working voltage is wide and can utilize the batteries to the largest extent. Luminous Flux: Output brightness comes to 1600 lumens (Max). Material: Aluminum alloy casing, avoid high temperature, fall-off protection. Switch type: Button (on - flashing - off)