Survival Whistle, survival kit, Whistle, compass. 3 in 1 Survival Whistle includes Whistle, Compass and LED Light. Survival Whistle, survival kit, Whistle, compass.3 in 1 Survival Whistle includes Whistle, Compass and LED Light. Description:1.Material: ABS2.Size: 7.0*2.0*0.5cm OEM &ODM is available. 3 in 1 Survival Whistle