High-quality, sturdy and durable, environmentally friendly PU cable Light and simple, clear sound Product easy to wear, high-fidelity Has a recording function, and powerful Perfectly suitable for police, supermarkets, hospitals, airports and other staff to use Specifications: Dimensions 1.77 x 0.59 x 2.95 inch / 4.5 x 1.5 x 7.5 cm (L x W x H) Color Black Weight 87g Compatibility TK-3107 / TK-3207