1) Wireless precision tracking and RF operation 2)2.5M operation distance. 3)Mini size: 90x46x33mm, suitable for notebook too. 4) Modulation frequency: 433Mhz 5) Great designs for products and packaging 6) Easy plug-and-play setup and operation 7) Includes: a) 2pcs AAA batteries b) Mini optical mouse c) Mini USB receiver 8)Supports Windows XP/Me/2000/98/95/NT and MAC systems 9)Adopts optical orientation technology, high accuracy and reliability . 10)Can make customer's own design logo.