HiPower LED Miner Lamp Description 1. Standard Main LED: 1pcs 1W (3W optional) Duration: 15hours-17hours (WarmWhite Natual White Optional) 2. SubLED :4pcs HiBright LED Duration: 270hours 3. Total Weight: 0.5Kg-0.6Kg. 4. Charging Time: <12Hours 5. Standard Battery: Li-ion battery (Polymer Li-ion Optional) Standard battery capacity:4000mAh or 5000mAh (3000mAh, 8000mAh optional) 6. 1Meter SpotLight: 1500Lux-2000Lux Features: 1. Collimator LENS make moon-like aperture and highest lux. 2. Copper-coated heatsink to guarantee MainLight-1W lifetime. Applications: 1. Coal Miner headlamp 2. Maintenance worker for railway, airline, oil & gas 3. Fireman headlamp