3.5mm Mono Listen Only Surveillance Acoustic Tube Earpiece Headset Anti Radiation for Radio Features 1、Superb audio quality, rugged design. 2、Reduce radio waves radiation, no harm to your health. 3、Soft ear bud to fit snuggly in your ear with a transparent acoustic tub.Come with a replacement ear bud. 4、Excellent for use in police, military, nightclubs, bars, security, restaurants, hotels, warehouses, and noisy environments 5、Suitable for iPod / iPod Nano / MP3 / Cellphone / CD / FM Radio / AM Radio and other devices with 3.5mm audio port. Specification The transparent acoustic tube ear piece can fit snugly in your ear and transfer sound in high quality. Transparent acoustic tube would be hardly noticed by others. It is designed to ensure security covert communication. you don't have to worry about being heard by others around you. It can be compatible with most radios, microphones or MP3 players with a 3.5mm audio jack. Features: Superb audio quality, rugged design. Reduce radio waves radiation, no harm to your health. Soft ear bud to fit snuggly in your ear with a transparent acoustic tub. Come with a replacement ear bud. Excellent for use in police, military, nightclubs, bars, security, restaurants, hotels, warehouses, and noisy environments. Suitable for iPod / MP3 / Cellphone / CD / FM Radio / AM Radio and other devices with 3.5mm audio port. Specifications: Color: Black Material: PET Wire Length: 1m Audio Port Diameter: 3.5mm Suitable: for iPod / MP3 / Cellphone / CD / FM Radio / AM Radio and More Package Weight: About 40g Package Included: 1 * Acoustic Tube Earpiece with Clip 1 * Replacement Ear Bud (Other items in the pictures are not included.)