EOY Professional Soccer Football Referee Whistle Volleyball Handball Whistles

Features: A unique double chamber design that produces 2 different high waves. Made of ABS material, high strength, very durable for use. Portable size, easy to carry and use. Suitable for personal or professional use. Can be applied for basketball, football, volleyball etc. Descriptions: 3.74KHZ and 4.10KHZ mix wavelengths, making the sound quality of steel and penetration. Specifications: Material: ABS titanium alloy polymer material rope. Package included: 1 x Authentic Referee Whistle. 1 x Lanyard rope). 1 x Storage Box Box color. Notes: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in. Features: A unique double chamber design that produces 2 different high waves. Made of ABS material, high strength, very durable for use. Portable size, easy to carry and use. Suitable for personal or professional use. Can be applied for basketball, football, volleyball etc. Descriptions: 3.74KH