Communicate with co-workers and friends with ease with this Garmin 010-10347-00 Earbud with PTT Microphone unit. It is designed to be compatible with a wide range of Rino devices including the Rino 110, 120, 130, 520, 520HCX, 530 and the 530HCX. This Garmin earbud with mic combo allows you to take important calls with other people in your group. 
Garmin 010-10347-00 Earbud with PTT Microphone:
Earbuds with PTT microphone
Compatible with Rino 110, Rino 120, Rino 130, Rino 520, Rino 520HCX, Rino 530 and Rino 530HCX
Easy-to-use earbud with push-to-talk microphone
Allows you to communicate with the rest of your group