Product Description CHYI Ergonomic Vertical Mouse 2.4G Wireless Computer Gaming Mice USB Optical Mouse Right Left Hand Mause For Laptop PC Desktop Package included: 1*Wireless Vertical Mouse 1*USB Receiver Specification: Buttons: Left/Right, Forward/Backward, DPI, Scroll Wheel Forward/Backward buttons cannot work on apple devices. Dimension:122*81*63mm Power supply: 2*AAA Battery Not Including Type : Wireless Vertical Mouse Color : White, Black,Pink Net weight: 88g Resolution: 800-1200-1600 DPI If the mouse is not fluid and jerks, please make sure you adjust the DPI to match your computer. This is opto-electronic mouse, the mouse will work better on the mouse pad. Features: 100% brand new and high quality. Ergonomically designed, optical tracking technology, working on many different surfaces and ideal usage for home, office or game. 2.4 GHz Wireless optical mouse, comfortable touch Low-voltage alarming function Receiver storage space and carrying easily This mouse has a sleep function: 3-5 minutes is normal sleep, shake the mouse can wake up, 8-10 minutes is deep sleep, need to press the left and right keys to wake. System support: Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, Mac OS, Windows ME, Windows 8, Windows 10 and so on. Note: 1."Page up/down button" cannot be used for Apple Computer 2. If you have any problems with the mouse or need any help, please