PRYMEBLU Wireless PTT. Best Volume & Channel Select on Apple iOS Devices Running ZELLO App. Partially on Android Devices & Other Push-to-Talk Applications (BT-PTT-Z-Smart).

PRYMEBLU® Wireless PTT. Best (PTT, Volume & Channel Select) on Apple (iOS) Devices Running ZELLO App. & Partially (PTT only) on Android Devices and Other Push-to-Talk Applications (BT-PTT-Z-Smart).

PRYMEBLU® Bluetooth Wireless PTT Button Switch ZELLO, Wave Communicator, ESChat, Unity, Streamwide and Many Other PoC Push-to-Talk Apps (BT-PTT-Z Mini)

PRYMEBLU® Bluetooth Wireless PTT Switch ZELLO, Wave Communicator, ESChat, Unity, Streamwide and Many Other PoC Push-to-Talk Apps (BT-PTT-Super Mini-FOB)