Rapoo 8100M multi-mode wireless keyboard mouse - Bluetooth 2.4GHz connectivity
Switch between Bluetooth 3.0, 4.0 and 2.4GHz - the smart switch between Bluetooth 3.0, 4.0 and 2.4GHz ensures stable wireless transmission. Bluetooth adaptor. (Batteries not included - takes 2 x AA - one for the keyboard, one for the mouse).