Specifications:Voltage: 2.8-6.6 voltsBattery Supported: single 18650 or 2*CR123A li-ion batteriesDimension: 133.5mm(length)* 23.4mm(head)Net Weight: 72±1 gram (no batteries included)Low voltage warning:It is lower than 3.1 volts if the LED Red indicator (on the side switch) flashes rapidly when you turn on. Then please recharge the battery.Low Voltage Protection:If the voltage is lower than 3.0 volt when turn on, automatic stepdown works. so it keeps stepping down to the lowest mode and runs out power juice. Please insert new battery if you get this signal.Battery Capacity Indicator (LED on the side switch)The indicator is on for 5 seconds every time when light turns on. It shows green or red to indicate the battery power.Steady Green: enough powerSteady Red: short of powerFlashing Red: running out of power. Please insert a new battery!Operation Instruction:1, one click to adjust one mode. It cycles from Eco-- Low --Medium--High --Turbo --Eco;2, Press 1.2 seconds to active Strobe, and one click again to active SOS; it cycles SOS-- Strobe-- SOS; press 1.2 seconds again to returns to common modes3, Memory function: It work for Eco/ Low / Medium / High/ Turbo (Strobe or SOS cannot be memorized)
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