Specifications: Material: ABS PC Color: Black / Blue / Green / Red (optional) Battery: 3000mAh polymer battery Charging Time: 3-5 hours Mode: High, Low, Slow strobe, Fast strobe Working Voltage: 3-4.2V 5W Input Voltage: 5V/1A Waterproof Grade: IPX4 Size: 115 * 59 * 32mm / 4.5 * 2.3 * 1.2in Weight: 140g / 4.9oz Package List: 1 * Bike Front Light