Anycom Bluetooth Headphones for iPod and iPod nano Bluetooth 1.2 standard Frequency - 2.4 - 2.4835 GHz (ISM Band) Range/Power Classes - Up to 10 meters (30 feet) range, Class 2, 0 dBm Supported Profiles - A2DP (Advanced Audio Distribution), AVRCP (Audio/Video Remote Control) Powered thru iPod Dock Connector, reduces battery operated run time by approx. 2.5 hrs.