... to industries related to petroleum, chemicals, metallurgy, electric power, railway, coals, fire prevention, public security, military ... light distribution design ensures the lamp of high reflecting rate, perfect focusing effect and long ... current regulator circuitpower supply1 18650 Lithium-Ion battery or two 3V CR123A lithium batterybrightness1000LUMEN cruise time240 minutesFunctional usesinspection, ...