7 in 1 whistle compass with multifunction for survival Led flashlight,whistle,compass,thermometer,magnifier,signal mirror, ware 7 in 1 whistle compass with multifunction for survivalSpecification:Color: Army Green (Standard), Orange, Army ... screw, that is the place for coin cell battery.Much photos of our model YK-CM071 as below: 7 in 1 whistle compass with multifunction for survival