Artes MS-W808R. Device interface: RF Wireless, Movement detection technology: Optical, Purpose: Office. Frequency band: 2.4 GHz, Wireless range: 10 m. Wireless receiver interface: USB, Receiver type: nano. Power source: Batteries, Battery type: AAA. Compatible operating systems: Windows 95 / 98 / NT / ME / 2000 / XP / Vista / W7