Specification: Size: 6.4*6.5*5.2cm Charging method: DC 4.2V/600mA Working hours: 17 hours Power: 3W Battery type: Lithium battery (18650) Battery capacity: 2500mah Rated voltage: 3.7V Shell material: PC Waterproof: IP65 Light source: LED two-speed light source Light source type: low beam, high beam Feature: Safety: All in one case with PC plastic material , make very good feature of explosion-proof, protection in electrical short-circuit, automatic power-off on the socket , 100,000 hours LEDs Life. Reliability: The high strength case , optimized structure design and MCU control make the product more reliable. Portability: Just a head lamp , Small in size , light in weight , simple charging , easy usage. Efficiency: more than 15hours working time , more than 2800lux at the starting time, and more than 2500 lux after12 hours continous lighting, battery usage life 600 cycles,, 6pcs 2mm backup LEDs. Environmental: Li-ion battery is free maintenance, and the material of li-ion is environmental , use 1Watt high power LED to save power. Economy: three times longer than lead and acid cap lamp and saving in maintenance makes the product more compatible in price. Water resistant : 2 meters. Note: The color might be a little different from the actual product due to color display of different monitors. Please allow 1-3 cm error. Packing Included: 1x Mining Headlamp