Specifications:
 Bluetooth V2.0 EDR compliant
 USB V2.0 compliant
 Operation range: 20m-100m (Bluetooth class 1 as marked on the packaging, but in reality it works between 10m to 15m. Spec on package tends to change from time to time too, but the actual hardware in the device remain the same)
Built-in antenna
Frequency band: 2.4Ghz unlicensed ISM band
Maximum data rate: 3 MB
Sensitivity: -89dBM@0.1%BER
Supports Win98/98SE/ME/2000/XP
Package includes:
1x USB Dongle
1x CD Driver (XTNDConnect Bluetooth Manager) (or download it here)
Length:1.97
Height: 0.31
Width: 0.59
Weight: 0.24 oz
Length: 5 cm
Height: 0.8 cm
Width: 1.5 cm
Weight: 6.8 gram