The new WA-CB can be connected to all Midland vehicular transceivers with 2 Pin plug able to power the adapter. Once you have connected the WA-CB to your transceiver, you can choose the Bluetooth earphone/mike upon your needs.
The Bluetooth earphones WA21 /WA31 / WA29 / WAMIKE are all supplied with a PTT button. The WA series earphones / mike can also be paired to mobile phones equipped with Bluetooth function.