Unique design with two chambers produces two different high frequency waves.
The product is made of high-strength ABS material, very durable for use
Easy to carry and use size.
Suitable for personal or professional use. The product can be used for basketball, football, volleyball, etc.
Description: 3.74KHz and 4.10KHz, which makes superior sound quality. Specifications: Material: ABS + Titanium Alloy + Polymer Material + Rope
english
