C-Shaped Earpiece: Rotates 180° for a customized fit on either the left or right ear 1-Wire Design: Flexible, streamlined cabling allows you to move freely PTT Button: Small, ergonomic size with rotating lapel clip Microphone: Provides clear voice transmission and conveniently built into the PTT button Compatible with most Motorola APX, DP, MTP, XPR, and other radio series (*Please see below for full compatibility)