Pryme BT-501 Kenwood TK ProTalk Headset Bluetooth Adapter Compatible with thousands of readily available Bluetooth headsets and other audio accessories. (audio accessories not included) Easy pairing process. Stores paired connection to the wireless headset even if the Radio is powered off or adapter is removed from the two-way radio. No time delay on either Transmit or Received Audio messages Several Push-To-Talk options: use the PTT button on the PRYMEBLU adapter to initiate transmissions, or use an optional PRYME Quick-Disconnect wired audio accessory such as PTT-5 (Optional accessories not included) Enhanced with optional wired PRYME Quick-Disconnect earphone or audio accessory for additional privacy. (Optional accessories not included.) RX and TX audio is automatically routed to the two-way radio or the appropriate wireless or wired audio accessory (Patent Pending) depending on what accessories are connected to the PRYMEBLU adapter. Status LED indicates connection to a compatible wireless accessory