Microsoft Wireless Mobile Mouse 6000. Device interface: RF Wireless, Movement detection technology: BlueTrack, Movement resolution: 1000 DPI. Frequency band: 2.4 GHz, Wireless range: 5 m. Wireless receiver interface: USB. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -40 - 60 °C, Operating relative humidity range: 5 - 80 %. Minimum hard disk space: 100 MB