Scope: railway, electricity, oil, metallurgy, military, police, fire, petrochemical and other flammable and explosive places Ⅱ C Class T1-T6 group 1 and Zone 2, underwater and other work site for mobile lighting . Performance Features: ◆ 3W LED bulb 3 in parallel, glare distance of 1000 meters, continuous working time of up to 3 hours or more; work light can continuous working time is not less than six hours, the lighting functions also increased on the basis of the frequency of flash functions can be used for long-distance signaling. ◆ The product has been certified by the national authority proof, explosion-proof the highest level, in full accordance with national explosion-proof standards, with excellent explosion-proof, anti-static effect, in a variety of flammable and explosive safety. ◆ use of lithium-ion battery without memory, large capacity, long life, safe and stable performance, low self-discharge, they can always charge and discharge; special high power LED, low energy consumption, high luminous efficiency, long life of 100,000 hours, eliminating the frequently changing light bulbs is like. ◆ Fully sealed design can be used normally under water 100 m; high hardness alloy casing, and anti-fall drop of up to 1 m height does not affect the function; resistant to high temperature, high humidity resistance, can be used in a variety of harsh environments. This product carries a handheld, Jiankua, waist and destroyed a variety of ways. ◆ The product has analog power detection feature that detects if the remaining battery charger using a dedicated charger chip controlled charging, high reliability, fast charging, overcharge protection, short circuit protection, trickle charging status indicator. Technical parameters: No. Parameter Name Unit Value Rated Voltage V 3.7 2 Rated Capacity Ah 4.4 3 Light LED Operating Voltage V 3.7 Current light mA 1600 work light 600 lumen light