Mice & Trackballs feature: 100% brand new and high quality. Ergonomically designed optical tracking technology that works on many different surfaces, ideal for home, office or gaming. 2.4GHz wirele optical mouse, comfortable Plug and play, no driver required Receiver storage space is easy System Support: Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, OS, Windows ME, Windows 8, Windows 10, etc. Specification: Buttons: Left/Right, Forward/Backward, DPI, Scroll Wheel Size: 122*81*63mm Power: 2 * AAA batteries (not included) Type: Wirele Vertical Mouse Color: white, black, pink Resolution: 800-1200-1600 DPI adjustable Net weight: 88g Package Included: 1 * Wirele Vertical Mouse (battery not included) 1 * USB receiver Notice: 1. Apple computers cannot use "up/down keys" 2. The mouse has a sleep function: 3-5 minutes is normal sleep, shake the mouse to wake up, 8-10 minutes is deep sleep, you need to pre the left and right keys to wake up.