24G Ergonomic Wireless Left-Handed Vertical Mouse Which Can Relieve Wrist PainFeatures:ERGONOMIC DESIGN The unique ergonomic shape supports the palm, with an innovative vertical design that keeps your hand and arm in a more natural and comfortable position Effectively reduces wrist strain and pain compared to a traditional mouse STABLE CONNECTION WITH LESS NOISE CLICK Reliable 24G wireless mouse connection with high anti-interference performance with 33ft transmission distance Quieter click makes you concentrate on the work without disturbing others beside you Just Plug and Play MULTIFUNCTION AND CONVENIENT -- Advanced "Page Back" and "Page Forward" functionality buttons provide convenience when web page browsing 800 /1200/1600 DPI Levels -- Easily adjusts the sensitivity of the mouse WIDE COMPATIBILITY Widely compatible with Windows 2000 / XP / Vista / 7 / 8 / 10 / Linux Note: computer needs to have a USB receiving port Once you get used to the ergonomic mouse, you will love it so mucRight-hand battery vertical mouse battery versionSingle size: 122x81x63 mm Net weight: 88g Packing size: 131x92x76mm Battery type: shipped without (3AAA two AAA batteries) DPI: 800-1200-1600Right-hand rechargeable vertical mouse:Charging: about 3 hours of use for about a monthRed light when charging, green light when fullBuilt-in lithium battery: 350 mAh 37v battery weight: 975 gramsSingle size: 123x75x62mmPacking size: 131x92x76mmDPI: 800/1200/1600Wired vertical mouse:Length: 125mm 429 inWidth: 63mm 248 inHeight: 75mm 295 inCable length: 170cmDPI: 800 1200 2000 3200 DPI adjustment light is blue, purple, green, redPackage :1 x mouse