Mini size can insert into the family media system USB interface with U disk no need external connecting cable such as power cable and audio cable users can enjoy ten meters bluetooth wireless transmission play and control IPHONE ITOUCH or audio documents in the bluetooth devices. This product uses the Bluetooth V2.1(bluetooth EDR technology) data transmission can up to 2.1Mbps three times higher than current bluetooth technology ensure teh stable wireless audio transmissiom and the sound quality shorten the data transmissiom time and lower the power consumption. New technology also provides extra bandwidth to bluetooth radio enables the bluetooth music receiver to remember as many as six paired device at the same time. This product can match with IPAD IPHONE4 IPHONE3G/3GS first generation IPHONE second generation IPOD TOUCH and other A2DP stereo bluetooth devices. Functions: Bluetooth V2.1 (does not support the 3.5mm-to-RCA and 3.5mm to 3.5mm audio cable) because it is input by USB interface. Support A2DP bluetooth stereo. Bluetooth audio play answer the call function. Can used as the bluetooth speaker when insert the U disk