1.100% Brand new and high quality.

2. Bluetooth BT 4.0 LE compliant (High Speed)
3. Compliant with Bluetooth Version 3.0 + HS, 2.1 + EDR and 2.0
4 . Supporting Profiles: networking, dial-up, fax, LAN access and headset
5 . Bluetooth Class 2, Compliant  with Bluetooth Class I standard
6. Effective Range: 20m 
7. Interface: USB compliance
8. Simple pairing and anti-jamming design
9. Support Wake-on-WLAN and Wake-on-Bluetooth
10. HCI transport updates for USB and SDIO
11. Simple pairing and anti-jamming design
12. Rate: 3Mbps
13. Operation System: Windows XP, Vista, Windows 7 32/64 win8

Specifications:
1. Version: CSR4.0
2. Operation system: xp/vista/win7(32/64/)/win8
3. Interface: USB compliance
4. Sensitivity: - 86dbm#0.1 %
5. Receiving/Sending range: 20m
6. Certifications: FCC, CE
7. Size: 26×15×7mm