escription: 1, Using the latest JUWEI Bluetooth technology, data transfer rates up to 10 Mbps, three times to the current Bluetooth technology, namely, ensure a more stable wireless audio transmission, which provides high-quality sound, & shorten the time of data transmission, reducing power losses. 2, Can support including the iPad, iPhone 4, iPhone 3G/3GS, other Apple products on the market & Android devices have A2DP Stereo Bluetooth. 3, Supports all the speakers program. 4, Bluetooth audio player, answer the phone function. 5, Button functions: previous song/volume reduction, Next song/plus volume, play/pause, answer the phone/ hang up the phone function. Feature: Power mode: USB (Universal Serial Bus) power supply Bluetooth: Bluetooth EDR Output mode: USB (Universal Serial Bus) interface/3.5mm audio interface Receiving range: 10-15m Application: This USB (Universal Serial Bus) Bluetooth music receiver suit for all speaker with USB (Universal Serial Bus) socket, so long as your speaker supports USB (Universal Serial Bus) playback, audio from USB (Universal Serial Bus) port output; or a speaker with an AUX port, you can connect the audio connection cable to AUX port, play mobile music after Bluetooth pairing a successful, & then on the submenu, select play music via Bluetooth, music play from the speakers. Package included: 1 x J2 Wireless Bluetooth Audio Receiver USB (Universal Serial Bus) Bluetooth Headset 4.0 Adapter 1 x 3.5mm audio cable