Sheepdog Acoustic Tube Microphone Earpiece. Premium 1-wire audio accessory. Best-suited for those who wear the Push-To-Talk (PTT) and microphone on their shirt collar or lapel. Ideal for warm weather locations or users wearing short sleeves. Versatile and hygienic. Used by hotels, resorts, security and retails organizations worldwide. Compact sized Push-To-Talk (PTT) high-quality microphone for crystal clear audio. Rugged anchored Kevlar reinforced cables for superior strength and durability. Coiled top wire section for added flexibility. Compatible with Motorola R7, ION and MXP600 radios. Compatible with MOTOTRBO R7 (Version M2022.02 or Newer). Compatible with MOTOTRBO ION (Version M-ION.2022.03 or Newer).