Mini adapter plug and play.Wireless transmission, the operation distance up to 10 meters.Power switch for saving power.With 6 keys, including scroll wheel, page forward and page backward buttons for easy Internet surfing.Type: Wireless MouseDPI: 1200Power by: 2 x AAA Batteries(Not Included)USB: Ver 1.1/2.0System Requirement: for Windows 2000/XP/Vista/Linux/Win 7/MAC Operation SystemFeatures: Lightweight, 2.4GHz, Matte, Wireless, 6 KeysDimension: 9.8cm x 5.9cm x 3cm/3.86" x 2.32" x 1.18" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Wireless Mouse1 x USB Receiver(Battery is not included.)