Specification:Size: 6.4*6.5*5.2cmCharging method: DC 4.2V/600mAWorking hours: 17 hoursPower: 3WBattery type: Lithium battery (18650)Battery capacity: 2500mahRated voltage: 3.7VShell material: PCWaterproof: IP65Light source: LED two-speed light sourceLight source type: low beam, high beamFeature: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