Features: brand new and high quality Scientific ergonomic design encourages healthy neutral "handshake" wrist and arm positions for smoother movement and less overall strain. Special soundless design for the right and left buttons, help you build a quiet atmosphere without disturbing others. 800 / 1200 / 1600 DPI resolution optical tracking technology provides more sensitivity than optical mice for smooth and precise tracking on a wide range of surfaces. Built-in durable durable lithium rechargeable battery, with a charging cable. No more need for extra AA battery. for most system including Win7 / 8 / 10, XP, Vista and Linux. Fit for Notebook, PC, Laptop, Computers. Package Includes: 1 Set Wireless Mouse Specifications: Wireless technology: 2.4G Wireless distance: 10m Size: Approx.104x60x76mm/4.1x2.36x2.99 inches for Key number: 6 Resolution: 800/1200/1600dpi Operating cycles: 1,000,000 cycles Battery: 500mah lithium Material: ABS+matte oil Color:Pink System requirement: For Win 2000/ 2003/ ME/ XP/ Vista/ Win7/ 8/ 10/Linux note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.