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General Radio  Bluetooth Class I: 100 meters (in open space)
Bluetooth Standard Bluetooth V2.1 specification  with  EDR                             
System Support Windows /2000/XP/Vista
Support Skype auto connection
Dimensions 22 *18 *7.5mm
Chipset Broadcom 2046
The accessories include Blister packing, CD driver.
ertificates CE, ROHS
Boundled Bluetooth Software Widcomm 6.X