Green/Red/Blue LED (Please choose which type you need)Switch: End cap press on-off switchMode:1 modeLuminous Flux: 500 Lumens (Maximum)Battery Configurations: 1 x 18650 battery（not Include)Material: 6061T Aluminum alloyConstruction:Shakeproof and waterproofDimensions:135mm (L)x31.5mm (Head Dia)x25mm (Body Dia)Package contains:1 X WF-501B LED Light Flashlight Torch; 1 X Remote Pressure Switch for this flashlight