Optical Vertical Mouse USB Interface Office Wired Mouse,black AZ11637 Features:User-Friendly Design: Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions,It eases tension on the wrist and hand for right-handed users.Soft-click mouse: The more ergonomic friendly mouse for work,you will love it as much as its normal soft-click and it'll be more beneficial for you long term.Professional Button: Added next/previous buttons provide convenience when webpage browsing;the superior choice for internet surfers, gamers and people who work at length at the computer.High Responsiveness: Simply press the DPI button and switch between DPI levels 800,1000 and 1200 to adjust the mouse's responsiveness to suit whatever you're doing.Optical Tracking Technology ensures greater sensitivity for precise tracking on a wide range of surfaces.Multiple power-saving functions: enter the sleep state for a few seconds when the mouse is not used, and enter the deep sleep state for ten minutes.If you don¡¯t use it for a long time, you can effectively save power by turning off the power switch at the bottom of the mouse.Precise optical engine: equipped with PAN3502 high-performance optical engine, the resolution can reach 1200DPI response speed, so that every movement is not stuck.Piano mirror surface material: The mouse button surface adopts high-gloss UV baking varnish process,the piano mirror effect is round and jade-like, which improves the grip and lift and is easy to clean.Specifications:Material: plasticColor: blue, black, grey, purplePower Source: WiredDPI: 800-1000-1200.Package Included:1 PC x Wired vertical mouse