19.0mm IP65 dynamic waterproof washable rugged anti-vibration silver resin optical trackball module with 800 DPI resolutions for fast and accurate cursor movement, which can be removable for easy cleaning, with durable coating & antimicrobial surface and can be used in harsh environments to well withstand bacteria, USB interface, with 2 external left and right mouse buttons optional, panel mounted solution. Designed to meet MIL-STD-810H (high and low wide temperature, low pressure (Altitude), humidity, vibration, shock, salt spray, temperature shock, drop, rain, sand & dust, fungus, solar radiation etc.) as well as military standards: reliability, safety, maintainability, testability, supportability, environmental adaptability, stability, compatibility, consistency, and continuity, MIL-STD-461G-EMC-EMI-EMS-ESD optional.
DIMENSIONS: 50.7mm x 50.0mm (L X W)