Features: 1. CE certificate of compliance NO: TMC20110209EC01 IP65 certificate of compliance NO: TMC20110509EC02 2. Explosion-proof, water-proof, protection in electrical short- circuit,automatic power- off on the socket, 10,000 hours led lifetime. 3. High quality, strong brightness, long life time. 4. All our lamps has one year warranty. We will keep free maintenance for you in one year. Technical Specifications: Light source : 1Willumimous flux : 90lm lighting degree : 3500 luxlifetime : 30000 hoursBattery capacity: 4.5Ah Li-ion batteryvoltage:3.7Vcharging time : 6 hours lifetime:1000 cyclesCharger input voltage :AC110-240Voutput voltage :DC4.9V output current:1A Continuous lighting time 15 hours Lighting range 40M Working temperature : -20 - +40 Max surface temperature : 40 Outline dimension: 77*62*55MM Weight (single lamp) : 210G Type of protection : CE,ATEX,EXIB II Protection category : IP65