Rapoo 1090p. Device interface: USB, Movement detection technology: Optical, Purpose: Office. Frequency band: 5 GHz. Wireless receiver interface: USB, Receiver type: nano. Power source: Batteries, Battery life (max): 6600 h. Mac operating systems supported: Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion