Features: Ergonomically designed optical tracking technology is suitable for many different surfaces and is perfect for homes, offices, or games. Wired and 2.4GHz+BT wireless optical mouse for comfortable touch Plug and Play, no driver required Convenient receiver storage space System support: Windows 2000, Windows XP, Windows 7, Windows Vista, Windows 98, OS, Windows ME, Windows 8, Windows 10, etc. Specifications: Buttons: left/right, forward/backward, DPI, scroll wheel Size: 122 * 81 * 63mm Power supply: 2 * AAA battery (not included) Type: Wireless Vertical Mouse Color: Black Connection method: USB or 2.4G+BT Packaging included: 1 * Wireless vertical mouse (without battery) 1 * USB receiver Or 1 * Wired mouse Attention: 1. the pc for MAC cannot use the "up/down button" 2. The mouse has sleep function: 3-5 minutes is normal sleep, shaking the mouse can wake up, 8-10 minutes is deep sleep, and you need to press the left and right buttons to wake up