1.1/1.2 version of the Bluetooth standard 
Spectrum bandwidth：2.4 Ghz ISM 
The maximum data transfer rate： 723 Kbps 
Product weight：0.8 g 
Receiver sensitivity： -80 dBM 
Wireless LAN：7 client support, 10 m to 20 m distance wireless connections 
Power consumption：90 mA maximum current
Data transmission speed：480 MB / sec.
power sulpply：USB 5V600ma
Specifications： Neutral Chinese / English carton packaging 
Operating system: Windows 98SE/ME/2000/XP, Macintosh OS 9.0 and above