1. Made of fine quality aluminum alloy, quick heats dissipation, drop and wear-sistant.2. Low battery design for timely charging.3. IPX4 daily waterproof, fine sealing and not easy to rust.4. Long-Lasting Battery:With a 2600mAh battery, USB design, you don' need to worry its battery.Charging Method:Type-CWaterproof Level:IPX4Mode:High Light, Low Light, SOS, Fast FlashLumen:800Battery:2600 mAhPower:7WLamp Bead:XPG3lnstallation Method:HangingColour:BlackMaterial:aluminium alloyPackage Contents:1 * Bicycle light1 * Bracket1 * Data cableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.