Package Contents: [1x] Swivel Earpiece 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 without tangling Total Length: 40 Inches (Unexpanded) PTT Button Mic: Small, ergonomic size with rotating lapel clip; Microphone provides clear voice transmission Compatible with Motorola SL Series Radios *Please see below for compatibility *NOT Compatible with Talkabout Series