TRENDnet Low Energy Micro Bluetooth 4.0 Class I USB 2.0 with Distance up to 10 Meters/32.8 Feet. Compatible with Win 8.1/8/7/Vista/XP. Classic Bluetooth, Stereo headset, TBW-107UB

Class II Bluetooth® 4.0 with a 10 m (33 ft.) range Up to 3 Mbps data transfer rate Slightly larger than a penny Windows® compatible Enhanced Data Rate (EDR) support improves performance Stereo audio support Bluetooth® Low Energy protocol NDAA compliantTRENDnet's Micro Bluetooth® USB Adapter, Model TBW-107UB, networks a Windows® computer to Bluetooth® devices such as keyboards, headsets, and mobile devices. Slightly larger than the size of a penny, experience exceptional Bluetooth® connectivity for distances of up to 10 m (33 ft.) with stereo audio support.