Feature: ● Powerful optical engine provides accurate click, quick response, and stable signal.  ● Ergonomic design, the vertical type mouse fits the palm and fingers, reduces discomfort when using, bid farewell to the 'mouse hand'.  ● 5 adjustable DPI(1000-2000-3000-5000-10000DPI), easy to switch, adapt to a wide range of material surfaces, accurate and reliable position, meet your daily office and gaming needs.  ● Exquisite surface treatment, comfortable hand feel.  ● Powered by USB, plug and play, easy to use.     Specification: Number of Buttons: 12 Buttons.  Tracking System: Optical.  Optical Engine: PMW3325.  Connection Mode: Wired.  Interface Port: USB.  Cable Length: 1.8m.  Resolution: 1000-2000-3000-5000-10000DPI.  Frame Rate: 5000IPS.  Frequency: 125-1000Hz.  Acceleration: 5G.  Button Life: 10 million times.  Roller Life: 1.2 million times.  Working Voltage/Current: 5V/100mA.  Supported System: Windows 2000/ME/XP (x64)/Vista/Win7/Win8/Win10/MacOS X(over V10.4).  Size: 134 x 96 x 83mm.  Weight: 165±5g.     Package Included: 1 x Wired Vertical Mouse.  1 x Foot Mat.  1 x User Manual