... lumens, life100,000 hours.2, circuit: Precision Design 3-speed dimming circuit, with anti-reverse, anti had ... after the next power shift, power more than 3 seconds with have memory function, power will default ... ratio of stalls were: 100%, 30%, 5%.3,with a 18650 battery minimum life time of 2 ... the long LED flashlight can not be compared 3.stainless steel shell, to give adequate protection flashlight ...