ICIDU Wireless Presenter. Wireless technology: RF, Frequency band: 2.4 GHz, Wireless range: 15 m. Battery technology: Alkaline, Battery type: AA. Wireless receiver interface: USB, Receiver type: nano. Colour of product: Anthracite, Black. 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