Description: This product uses smart wire-controlled air duct technology, radiation protection function allows you to use this product for a long time without feeling uncomfortable. Features: Smart wire control, radiation protection, silicone earplugs, long wearing without earache. Excellent sound quality. It absorbs sound through the throat and transmits it through the air duct to the ear. It isolates noise from the outside and ensures a clear sound quality. Ergonomically designed, this throat microphone uses professional-grade acoustic ear coils, ergonomically designed ear cushions to ensure a wide range of ear sizes and different people wearing styles. Accompanied anytime, anywhere, finger PTT a key operation, free your hands, is your best partner for work and exercise. Clever and transparent hidden design, confidentiality needs of special working groups. Specifications: Color: Black Material: Plastic Weight: 73g Line Length: Approx. 130cm / 51In Package Size: Approx.16 * 13 * 3 Cm / 6.3 * 5.1 * 1.2In Packing List: 1* Laryngeal Earphone