"Model: M100RColour: black whiteWireless transmission frequency: 2.4 GHzMouse size: 100-120 mmNumber of buttons: 3Interface: USBDPI: 1000DPILine length: 1.8mSystem support: Windows 10 or higher / Windows 8 / Windows 7 / Mac OS X 10.5 or higher / Chrome OS / Linus kernel 2.6 + 2.”FeatureQuietly click,scroll and move your mouse around all day and night without over-working your hand.The contoured right-handed shape and curved soft rubber grip guide your hand to a natural,comfortable position.Package Contents1 X M100r Optical USB Mouse#USBWiredGamingMouse #ComputerMouse #ErgonomicOpticalMice #Logitech Mouse #M100r wired mouse