Comfortable Design:The vertical design provides better support for your forearm minimizing wrist pain that can come from twisting. You will remain comfortable even after long hours of clicking, tracking, and scrolling, It eases tension on the wrist and hand for right-handed users3 Adjustable DPI:800-1200-1600 DPI resolution optical tracking technology provides more sensitivity than standard optical mice for smooth and precise tracking on a wide range of surfacesExtremely Low Power Consumption:No need any driver, plug and play directly. Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain. Right-handed mouse. Dimensions: 10.6 x 7.3 x 6cm.portable and light weight, very convenient to carry and storeEasy to Use:All buttons is easily operable without contorting your fingers. The button force is light for easy clicking, but still firm enough to avoid accidental actuation. Added next/previous buttons provide convenience when webpage browsing; the superior choice for internet surfers, gamers and people who work at length at the computerWide Compatibility:Well compatible with Windows 7/8/10/XP, Vista7/8 and Linux, etc. Fits for desktop, laptop, PC, and other devices.