Fox40 Epik Referee Whistle CMG This referee whistle blows easily and produces a clear sound. It can be heard up to 1.5 kilometers away. The whistle has extra rubber pieces on the top that provide more grip. Because the whistle is ergonomically designed, it is easy and comfortable to hold. This whistle is used by professionals. Specifications: Color: orange/black Whistle material: plastic Mouthpiece material: plastic Whistle length: 50 mm Sound: 115 dB