Yaesu SSM-20A waterproof speaker microphone for Yaesu FTA-250L, FTA-450L, FTA-550L, FTA-750L, FTA-850L airband radios.
With Side PTT button. The SSM-20A microphone is supplied with a fixed screw-on connector to always have a firm connection to the radio. An optional earphone such as the SEP-10A or similar can be connected to the SSM-20A.
The SSM-20A is the successor to the SSM-10A. Functionally nothing has changed, the reason for the change is a different mounting of the microphone capsule.