Features: brand new and high quality This is a Covert headphone with Tube Sound. Effectively reduce radiation. You can adjust the volume. This eliminates most background noise, whether on the battlefield or in the workplace. Essential equipment. Plug Type: 3.5mm 1 pin. Made of high quality materials, durable. Excellent sound transmission, noise cancellation. You can adjust the volume to choose the most comfortable volume. Equipped with a comfortable, detachable sound tube and earphones that deliver clear sound and keep your conversations private. Its PTT also allows for comfortable and smooth calls. It is widely used in restaurants, clubs, shopping malls, for police stations, military and other places that require fast and convenient communication. Specifications: Material: plastic + metal Color :Black Size: About 150cm/59.05inch Note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xCatheter Headphones