Feature:1. UNIVERSAL COMPATIBILITY: Play voice from walkie talkies, two way radios, transceivers and radio speakers, shoulder microphones which has a 3.5mm mono port.2. ERGONOMIC DESIGN: D style earpiece ergonomically designed with lightweight material and is comfortable to wear. 360 degree swivel clip makes it easy to attach the ear piece to your clothing.3. HIGH PERFORMANCE: Single side earphone adjusts to fit either the left or right ear, provides excellent durability, reliability and performance in low profile environment, and has good sound quality.4. COILING DESIGN: Middle part coiling design, recommend used in the above the waist position, especially for shoulder speaker microphones or radios carried near the shoulder and chest.5. WIDELY USED: Ear hook earpiece is convenient to use earpieces at work. Good to use in security, hotel, restaurant, warehouses, supermarket and other places.Specification:Item Type: D Shape Single Side EarphoneMaterial: PUColor: BlackFeatures: for Cell Phones, MP3, MP4.Package List:1 x D Shape Single Side Earphone