La description

Communication unit (USB)
Model SR-UB1
Communication specifications Wireless communication Bluetooth Ver. 2.1 + EDR Class 2
Wireless communication distance Approx. 10 m (line-of-sight)
USB communication USB 2.0 Full Speed
Interface USB-COM, USB keyboard
Rating Current consumption Approx. 80 mA
Environmental resistance Ambient temperature 0 to +45 °C
Storage temperature -10 to +50 °C
Relative humidity 35 to 95 % RH (No condensation)
Storage relative humidity
Supported OS Microsoft Windows 8 Professional or later 32bit/64bit (Except for Windows RT), Microsoft Windows 7 Professional or later 32bit/64bit
Dimensions 20.6 ? 11.2 ? 65.4 mm
Weight Approx. 15 g
''