Full comply with WIN-XP,WIN2000,WIN-ME,WIN98.

USB, PS/2, USB+PS/2 Port

Wheel designed with pleasing clicking feeling

Get more efficient Internet navigation without using the toolbars or keyboard. You can program them to carry out your favorite commands in most popular applications.

Hardware Resolution 520 DPI

Key switch life≥10,000,000times

This precise optical sensor can detect on hundreds of surfaces, including wood, plastic

Designed for easy zoom-in and zoom-out