Microsoft ARC Touch. Device interface: RF Wireless, Movement detection technology: BlueTrack, Purpose: Office. Frequency band: 2.4 GHz, Wireless range: 9 m. Wireless receiver interface: USB, Receiver type: nano. Power source: Batteries, Battery type: AAA, Battery life (max): 4320 h. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -40 - 60 °C, Operating relative humidity range: 5 - 80 %