A4Tech K4-3D, Black USB Optical 800DPI Black mice

K4-3D - USB, 800 dpi, 4 buttons, 40.64 cm (16 ") 1 K4 16 in 1 Mouse.
A4Tech exclusive quick access "2X" button can be customized to have up to 16 functions at the same time,such as "Zoom In and Out, Scroll Left and Right,Copy,Paste,Back,Forward, etc..." - all at your fingertip.

Just press and hold the "2X" button, and move the mouse in one of any 16 directions, the corresponding function will be excuted instantly.

Designed with extreme fast report rate up to 2ms with Full-speed USB (Max. 500Hz reports/sec),the mouse allows you to use 4 times faster than a normal low speed USB mouse(8ms 125Hz).

Offers absolute precison and works on almost any surcase with pinpoint accuracy.

A4Tech Innovative Dual Focus Technology is designed to enable you to work on shinning surfaces. Traditional optical mice experience delays or are completely unresponsive on such surfaces - Run on Shine gives you the freedom to choose.