Outdoor Survival Tool PVC Multi Audio Whistle With Key Chain Specification:Product Name: PVC Multi Audio Whistle With Key ChainSize: 70mm x 27mm x 7mm (lenght x width x thickness)Material: Plastic Features:Comes with Key ChainHigh qulity and low price. A good choice when you are outdoor and need help.Outdoor Survival whistle, there are three holes, each hole has different sound. Combined pleasant-sounding voice.