Package Contents: [1x] Acoustic Tube Earpiece + FREE Extra Mushroom Tip Acoustic Tube Earpiece: Discreet FBI Style clear tube rests comfortably & securely in the ear 1-Wire Design: Flexible, streamlined cabling allows you to move freely without tangling PTT Button Mic: Small, ergonomic size with rotating lapel clip; Microphone provides clear voice transmission Compatible with Motorola SL Series Radios NOT Compatible with Motorola Talkabout *Please see below for compatibility *Please ensure pin is properly locked into radio to prevent microphone or sound issues