... :FOB shenzhenUser Manual:Alcohol tester watch with extremely high reliability feature, ideal for personal use.FunctionsTime, Alarm, LED, Temperature, ... settingTurn on : press the LIGHT button for 2 secondTurn off: press the LIGHT button for 2 secondTemperature unit shift settingPress ... kinds of solvents, detergents, perfume, cosmetics and other chemicals.If the watch is soaked by water, clean it with a ...