... stereo output 2.work range: 10 meters (33 feet) Bluetooth AV Dongle features:use with any multimedia player such as mps, pmp ... , walkman/diskman, etc. with stereo outputstandard:bluetooth v2.0, class iiwork ... *12.6mmweight:12g (include battery)certifications:ce,fcc,weee,rohs Bluetooth AV Dongle Bluetooth AV Dongle