Equip Wireless Notebook Presenter 2.4GHz, 100 m, Black Equip Wireless Notebook Presenter 2.4GHz. Frequency band and operating channels: 2.4 GHz, Wireless range: 100 m. Product colour: Black. Battery type: AAA. Compatible operating systems: Windows 98SE, ME, 2000, XP Mac OS 9.1 +. Weight: 40 g