What’s in the box:1 USB Cable,1 Set of Lights; Tube Diameter:20-31; Cell type:Li-polymer; Voltage:3.7-4.5; Handlebar Clamp Diameter:20-31; Running Time:180-420; Bulb Type:LED; Capacity:1200; Plug Type:USB; Type:Rechargeable Bike Light Set,Rear Bike Tail Light,Front Bike Light; Switch Mode:4 (High > Mid > Low > Strobe),Push Button; Application:Camping / Hiking / Caving; Body Material:ABS,Aluminum Alloy; Maximum Brightness:200; Power Supply:Rechargeable,USB; Charging Time:3-4; Range Distance:50 or lower; Batteries Included:Yes; Brightness (lumens):Lower than 400 lumens; Mode:4; Features:Super Bright,Multiple Modes,Quick Release,360° Rotation,Waterproof,Portable; Product Dimensions:13.09.05.0; Net Weight:0.18; Listing Date:08/06/2018; Discipline:Mountain Bike MTB