Very small and extra thin Bluetooth USB adaptor.Bluetooth USB 2.0 adaptor- Colour: blue- Compatible Bluetooth V1.6- Compatible standard "Application Profiles"- No need of external connection- Plug & Play support for Windows 98SE, ME, 2000, XP, MAC OS X- Ultra compact thin stick- Frequency: 2,4GHz- Bluetooth Class 1 (up to 160m)