Yaesu SSM-BT20 Bluetooth Headset for Yaesu FT3D, FTM-100-510, Yaesu FT5DRGenuine Yaesu part.
 
The new SSM-BT20 is a Bluetooth 5.0 headset and is designed for all YAESU Bluetooth compatible
transceivers.

The SSM-BT20 supports 16K audio sampling rate and the audio quality is much clearer than the SSM-BT10 (audio sampling rate: 8k). A new design also has improved PTT (Multi-Function) button
operability.