Specifications: Easy to use by connecting directly 30-pin dock to change the common sound-box to bluetooth-compatible sound-box. Support digital products using Bluetooth, such as for iPad, for iPhone, bluetooth-compatible cell phone, bluetooth-compatible PC. Complies with bluetooth-compatible V2.0, support A2DP V1.2. Plug and play. Powered from 30-pin dock. Type: bluetooth-compatible Music Receiver Bluetooth Standard: V2.1 or above Transmission Distance: 10m Transmission Speed: 30Mbps Frequency: 60MHz Size: 4.35cm x 3.55cm x 0.7cm/1.71inch; x 1.40inch; x 0.28inch; (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x bluetooth-compatible Music Receiver(Other accessories are not included.)