This product includes a professionally finished mechanical trackball with a diameter of 38.0 mm. There are three mouse buttons at the top of the trackball that can quickly switch between web pages with a left and right click. Specially designed to operate in harsh environmental conditions, the trackball is made of stainless steel, protected against dust and moisture (IP54), and resistant to mechanical, chemical and physical effects. USB or PS/2 interface available. Thanks to the mounting holes, it can be easily mounted on any equipment from the inside, providing a safer installation. It is compatible with Windows and Linux operating systems.