NSi E38-76A31D-M017 IEC60945 marine ergonomic 38 mm trackballs - desktop
Sealing to IP68 (fully waterproof)
Infra-red optical navigation technology
Integrated IP68 hall-effect scroll wheel
Integrated left, middle and right switch functionality
38mm ball for precise cursor movement
Removable ball for easy cleaning
Outputs: USB & PS/2 (auto select)
Smooth operation in rugged environments
No special driver required
IEC60945 MARINE CERTIFIED TRACKBALL