Features: 

1) Standard: Bluetooth spec. 2.0

2) USB V1

3) Optional range: 20m

4) Max. data rate: 3m

5) LED indicator: power 

6) With build-in antenna

Features: 

1) Standard: Bluetooth V1.1

2) USB V1.0

3) Option range: from 10 - 100m

4) LED indicator: power 

5) With build-in antenna

Features: 

1) Standard: Bluetooth spec. V1.1

2) USB V1

3) Option range: from 10 - 100m

4) LED indicator: power 

5) With build-in antenna

Features: 

1) Standard: bluetooth spec. V1.2/2.0 compliant

2) USB UHCI/OHCI spec 2.0 compliant

3) Option range: from 10 - 100m

4) Super slim bluetooth dongle

5) Weight: 29.4g (include package)