best military tactical flashlight 1.Compatible with 3V-18V Voltage 2 ... (17670)18500 batteries or two Lithium batteries,a flashlight have the length of tube,you can change ... door service,by sea,by air ,etc.ApplicationThe LED flashlight is ideal for hiking, map reading, night fishing ... since 1998, specializing in manufacturing LED flashlight,solar flashlight ,head light ,camping light bicycle light,etc..