SUNSKY RETEVIS TK Throat PTT Covert Acoustic Tube Earphone Speaker Microphone for H-777 / RT-5R / RT-5RV / RT-B6

This is an ideal choice for use in high environments, such as driving, riding a motorcycle and bicycle. It is also ideal for surveillance purposes and airport security, casino security, crowd control

A remote microphone with a push-to-talk button, you can edit anywhere.

The microphone emits sound directly from your throat, so it is not sensitive to background noise.

Have the highest quality transparent sound tube that is almost imperceptible to people around you, which can protect your body from radio electromagnetic wave radiation.

Spacing between two needles: 11mm