Manhattan MXP, RF, USB, 15 m, Silver Manhattan MXP. Wireless receiver interface: USB, Wireless technology: RF, Frequency band: 2.4 GHz. Product colour: Silver, Presenter functions: Mouse, Movement detection technology: Laser. Battery type: AAA. Compatible operating systems: Windows 98SE/Me/2000/XP/Vista Mac OS X 10.2+. Weight: 56 g