Rocketek RT-BT4B USB External Bluetooth 4.0 Adapter

1. Product material: ABS
3. Product interface: USB2.0
4. Operating frequency: 2.4MHz
5. Transmission rate: 3Mbps
6. Transmission distance: <=20m (the barrier-free transmission effect is better within 10m)
7. System compatibility: Windows 10/8.1/8.7/XP/Vista