Features: Usings highly luminances LED beads, providing powerful lighting effect, allowing cyclists to have better visible and safety in nighttimes or dimly environment. Equipped with a builted in Rechargeables battery, charging via USB is convenience and fast, without the need for frequent battery replacement. Convenience installation: Not tool required, easy installation, easy to fix on the bicycles, firm and stable, not easy to shake or fall. Crafted from reliable materials, it have good waterproof performances and dropproof ability, and is suitable for most environment. Not can used as bicycles headlight, but it can also be used as strong flashlight, makings it convenience for lighting need in outdoor camping, hiking and other activity. Specifications: Material: 6063 aluminum alloys, LED beads, battery Type: L12/7/L15 Size: As show in the picture 7 parameters: Bulb type: 10pcs white LED beads Exposure distance: 100-200meters Luminescence: 1500lumens Charging voltage: 5V/1Amp Charging time: 3-4hours Battery life: 2-6hour Battery: Builted in 1600capacity battery Waterproof grade: IP67 L12 parameter: Bulb type: 8x white LED beads Lumens: 900lumens Charging voltage: 5V/1Amp Charging time: 3.5-4hours Battery life: 3-28hour battery: Builted in 1000capacity battery Waterproof grade: IPX6 L15 parameter: Bulb type: 10xwhite LED beads Lumens: 2000lumens Charging voltage: 5V/2A Charging time: 5-6hours Battery life: 2.5-12hours Battery: Builted in 2pcs 18650 lithiums batteries (5000capacity) Note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. Package includes: 1set Bicycles Light