SUNDELY Covert Acoustic Tube Headset/Earpiece For Garmin Rino GPS Two Way Radio Walkie Talkie Combo Covert Acoustic Tube Headset/Earpiece For Garmin Rino GPS Two Way Radio Walkie Talkie 1-pin, Hidden mic in PTT button, 1 spare earbud included Rino110, 120, 130, 520, 520HCx, 530, 530HCx, 610, 655