fit for for Apple 30-Pin Dock Compact and mini-sized design, easy to take along with. Easy to use by connecting directly 30-pin dock to change the common sound-box to Bluetooth sound-box. High acoustic fidelity sound. Support digital products using Bluetooth ,such as for iPad iPhone, Bluetooth cell phone, Bluetooth PC. Complies with Bluetooth 2.0, Support A2DP. Powered: via target device ( docking station). LED: One LED for pairing and charging status. Transmission distance: up to 10~15 meters(No obstructions). Specification: Output: Bluetooth Support file: Bluetooth V2.0; A2DP HSP HFP OPP OBEX DUN Frequency Range: 2.4GHZ-2.4835GHZ Connector: Equipment with for Apple 30-Pin Dock Chipset model: OVC3860 Stereo Sound Chip Audio quality: High acoustic fidelity sound Transmission distance: Up to 10~15m / 33~49ft Package List: 1 * Bluetooth Music Receiver 1 * User Manual(English)