SUNSON METAL KEYBOARD with TRACKBALL.
☆ Robust and reliable metal keyboard
☆ Integrated 36mm trackball as cursor devices
☆ IP 65 waterproof, dust proof and vandal proof
☆ Support USB or PS2, USB is in default
☆ Plug and Play
☆ Support standard QWERTY layout, can be customized in any language
☆ Laser engrave letters, all letters on the buttons can be customized