The Vertical Mouse Will Help To Reduce The Pressure And Pain Caused By The Mouse On The Wrist.Ergonomically Designed, Long-Term Use With Comfortable Palm Feeling, Relieving Tired.6 Buttons, Including Left/Right Button, Dpi Button, Forward/Backwards Button And Scroller Button.Compact And Lightweight, Easy To Carry.Made Of Abs Material, The Surface Is Rubber, It Is Comfortable.The Left Mouse Light Bar Will Show Red At WorkSpecifications:Item Type: Wireless MouseMaterial: PlasticColor: BlackWork: LaserConnection: WirelessNumber Of Keys: 6 (With 3D Scroll Wheel)Buttons: Left/Right Button, Dpi Button, Forward/Backwards Button, Roller ButtonTracking Systems: OpticalDpi: 800-1200-1600Ergonomics: The Right Hand DesignMouse Power Supply: Built-In Lithium Battery (Charging By Usb Cable)