Description:High brightness and far lighting range features bring safer cycling. Telescopic focusing design makes you can adjust the lighting range.Compact size design makes it easy to carry and adds no extra weight to your bike. USB charging and power bank function design makes it more convenient to use.Made of high quality aluminum alloy material, it is durable.The length of the diameter is 2.6cm, the length is 13cm, and the stretchable length is up to 14.1cm.It is suitable for mountain bike.Item Name: Bike Front LightMaterial: Aluminum AlloyColor: Black Brightness: 350 lm Charging Time: 3-5h Charging Mode: USB Discharging Time: 2h Lighting Range: 200 Meters Battery: 1500mAh (Included) Modes: Bright Light/Low Light/Flashing Features: Waterproof, Super Bright, Telescopic FocusingSize Details: Diameter: 2.6cm/1.02" (Approx.) Length: 13cm/5.12" (Approx.) Stretchable Length: Up To 14.1cm/5.55" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Base 1 x USB Cable 1 x Bike Front Light