Zoom Bluetooth Wireless USB Adapter (Vista ready). Connectivity technology: Wireless, Host interface: USB. Data transfer rate (max): 3 Mbit/s, Bandwidth: 2.4835 GHz. Bluetooth version: 2.0+EDR, Frequency band: 2.4835 GHz, Maximum operating distance: 10 m. Power consumption: 82 mA. Width: 19.8 mm, Depth: 59.7 mm, Height: 8.26 mm