85 keys compact format IP67 dynamic water proof vandal proof stainless steel industrial keyboard with durable polymer keys and static 38.0mm trackball / transparent touch ball module, with fully sealed industrial PCB with carbon-on-gold key switch technology with long stroke (2.0mm) with extremely good tactile feeling for fast and accurate data input without any noise, functional keys F1, F2, F3…F10, F11, F12 are on the top line for easy operation, high quality durable black titanium electroplated on the top stainless steel plate, 3 mouse buttons designed for right & left clicking and scrolling up and down with ball rolling, strong durable polymer keys caps with laser technology for backlight out, with adjustable backlight included, stainless steel top plate with sealing gasket and threaded bolts for top panel mounting solution. DIMENSIONS: 361.0mm x 145.0mm (front panel) K-TEK-M361-TB-FN-BL-BT-DWP can be subdivided to below three versions: K-TEK-M361-OTB-FN-BL-BT with IP68 dynamic washable 38mm stainless steel optical trackball module with +800 DPI resolutions K-TEK-M361-LTB-FN-BL-BT with IP68 dynamic washable 38mm stainless steel laser trackball module with +1200 DPI resolutions This keyboards is constructed to survive in exposed, unsupervised, public environments, and Army, Navy, Air force. Their responsive key action ensures rapid, reliable and responsive data entry in tough, wet or hostile conditions.