IOGEAR Bluetooth Audio Transport/Stereo Headphone (GBMH221) (Discontinued by Manufacturer) Enjoy music wirelessly from Bluetooth-enabled computers, PDA, MP3/CD players, and more Maximum wireless range up to 33 feet (10 meters) Supports MP3-quality stereo sound (frequency response 20Hz to 20 KHz) Convenient built-in rechargeable battery for up to 6 hours play time Class 2 device compliant with Bluetooth 1.2 specifications