Super mini size, LED designed,Skid-proof design & waterproof design,Using durable Aluminum alloy casing Output brightness can come to 300 lumens (MAX) Adjustable focus range for different usage, zoom in-out, for climbing, camping and outdoor activity etc Steel body clip for convenience carry,3 modes:High/Low/Strobe(Changed by switch) Power Source: 1 x 14*50mm 3.7v Battery / 1x AA (Not Included)