Features: 1. This cap lamp is explosion proof, water proof, protection in electrical short-circuit,automatic power- off on the socket. 2. More than 18 hours working time, more than 10000lux high brigtness, more than 500 cycles lifetime of the battery. 3. All our mining safety cap lamps lamps hasone year warranty. We will keep free maintenance for you in one year. Technical Specifications: source LED power : 1W illumimous flux : 100 Lm lighting degree : 10000Lux(for 1 meter) lifetime : 50000Hour Battery capacity : 5Ah voltage : 3.7 V charging time : 6Hour lifetime Cycle : more than 500 Charger input voltage : AC110-240V output voltage : DC4.2V output current : 1 A Continuous lighting time : 18Hour Lighting range : 50 M Working temperature : -20 - +40 Max surface temperature : 40 Outline dimension : 77*93*41MM Weight (single lamp): 500g Type of protection: CE,ATEX,EXIB II Protection category: IP65