... , automatic power-off on the socket , 100,000 hours LED’s Life1.2 Reliability: The high strength case , optimized ... lamp number , time , battery capacity by 4 LED digit , 6pcs 5mm backup LED’s1.5 Environmental: Li-ion battery is free ... of li-ion is environmental , use 1Watt high power LED to save power1.6 Economy: three times longer than ... Water resistant : 2 meters KJ3.5LM(A) 3.5Ah LED miner headlamp