Craig Electronics Bluetooth Adapter for Apple 30 Pin Cable - Retail Packaging - Black Bluetooth version 2.0 that supports A2DP (advanced Audio Distribution Profile) 1.2 version Transmits high quality stereo sound and features compact stereo sound Automatic detection of 5V or 12V power supply Transmission distance op to 30 feet Bluetooth frequency range: 204Ghz-2.4835 Ghz