... XP, Vista, Win 7 and Mac Features:2.4GHz wireless transmission up to 10 meters operating ... 2480MHzRF operation channel: 16, auto frequency hoppingUSB: USB 2.0Operation systems: Windows 2000, Me, XP, Vista, ... : AAA battery (not included)Rated operation current: 15mA, 1.5VColor: as shown in the picturesUSB receiver ... Black color :White color:White boxMaster carton 2.4 GHz High Speed Quality USB Wireless ...