30PIN: Bluetooth adapter receiver for iPod, for iPhone Dock, Bluetooth music receiver with a 30-pin connector, can be connected to Bluetooth speaker systems. COMPATIBILITY: The Bluetooth receiver is suitable for iPhone 4, 4S, etc., and speaker systems with a 30-pin connector for devices. Please check your device before connecting. FAST TRANSFER SPEED: The Bluetooth audio receiver boasts a transfer speed of 4 Mbps, allowing you to play your favorite songs from your device at a distance via BT connection. BLUETOOTH: The Bluetooth audio adapter is compatible with all Bluetooth-enabled wireless music transmission (A2DP), enabling seamless music streaming without additional manipulation. EASY TO USE: The wireless Bluetooth audio receiver is plug-and-play, offering instant setup and simple configuration. Just connect, pair, and play your music.