The smallest dongle V2.0+EDR, Class II
1. General Radio: Bluetooth Class II, 20 meters (in open space) 
2. Carrier Frequency: 2.4 - 2.483GHz Data Rate: Up to 3 Mbps
3. Bluetooth Standard: Bluetooth v2.0 + EDR
4. Spread Spectrum: FHSS
5. I/O Interface: USB v2.0 & 1.1
6. System Support: Windows 2000/XP/Vista
7. Dimensions: 21.6X14.3X5.4mm
8. Weight: 1 gram
9. LED Indicator: Single LED
10. Bounded Bluetooth Software: IVT Bluesoleil (Language Supported: English, Simplified Chinese, Traditional Chinese, Japanese, Korean, French, Italian, German, Spanish, Danish, Dutch, Finnish, Norwegian, Polish, Portuguese, Russian, Swedish)