A4Tech OP-530NUS Black V-Track Mouse

Optical scroll wheel for ultra-fast scrolling, improving productivity. The scroll wheel allows you to browse long documents and web pages with a single motion. Experience enhanced cursor smoothness and control on virtually any surface. Contoured design for better support and grip. Features Silent click. Focus on your work without disturbing others Button lifespan. High quality ensures over 5 million clicks 1200 DPI. Guaranteed smooth and accurate tracking on any surface Dust-resistant scroll. Dust-proof design extends scroll wheel lifespan 8-in-1 function. Assign various actions to the programmable button using 8 defined gestures 4D scroll wheel. Four-direction scrolling — horizontal and vertical