Motorola 56517 Earset Hands-free headset is designed for use with all professional Motorola XU, XV and RD two-way radios. Ideal for use in any number of retail environments, especially when you need to communicate privately with co-workers without bothering customers. Lightweight earpiece fits over either ear. Includes in-line microphone with push-to-talk. Compatible with XTN, RD, AX Series, CLS Series and M-Series walkie-talkies except Motorola CLS1450cB.