Wireless adapter connects directly to IPOD series; Transmit high fidelity stereo music without wires from IPOD to the headphones; Support paired bluetooth stereo pin code:?000?headphone and stereo headset to control play/pause forwards/backwards; Support Bluetooth audio and video remote control profile; Support automatism paired (no button); Support IPOD type:ipod mini, ipod nano ipod video etc; Support Bluetooth A2DP profile; Range of Frequency: 2.42-2.480 GHz(SIM) Spectrum Power supply: from IPOD working current: 40MA(max) Bluetooth v1.2(class 2)up to 10 meters Dimensions:39mmⅹ29mmⅹ7mm Weight:8gram