Adapter Bluetooth 2.1 30-pin wireless to 30-pin docking station speaker white Description: The operation is simple, just plug in the speaker audio input cable and you can use it, and a regular speaker instantly becomes a speaker. very long reception distance, up to more than 20 meters in open and undisturbed areas High sensitivity, high efficiency chip, very low power consumption and long continuous working time. Miniaturized, user-friendly design, easy to carry and beautiful. Fits mobile phones, computers, iPhone, iPad, MID and all other digital products with function. Specifications: Version: IP02 Interface: 30 pins Is plug and play: plug and play External power supply: no external power supply Transmission Rate: 4Mbps Effective working radius: 20m Norma : 2.1 Operating Frequency: 2480MHz Material: ABS plastic Size Chart: 4,3x3,5x0,8 cm/1,69x1,38x0,31 inch The package includes: 1 piece adapter