Cherry eVolution SIRIUS XT Wireless MultiMedia Desktop. Device interface: RF Wireless. Movement resolution: 1000 DPI. Wireless range: 10 m. Keyboard dimensions (WxDxH): 456 x 204 x 25 mm, Keyboard weight: 0.63 kg, Mouse dimensions (WxDxH): 120 x 65 x 40 mm. Operating temperature range (T-T): 0 - 50 °C, Storage temperature range (T-T): -20 - 65 °C