Cirago BTA-6210. Connectivity technology: Wireless, Host interface: USB, Interface: Bluetooth. Data transfer rate (max): 3 Mbit/s. Bluetooth version: 2.1+EDR, Frequency band: 2.402 - 2.4835 GHz, Maximum operating distance: 100 m. Input voltage: 5 V. Width: 24.13 mm, Depth: 3.18 mm, Height: 12.7 mm