65 keys Metal keyboard with trackball:

*Faceplate dimensions:392 X110 mm;
*Antivandal,Waterproof,Dustproof;
*Actuator/keys materials: 316#(RoHS) stainless steel;
*Customizable 316#(RoHS) stainless steel keys;
*Trackball Diameter:38mm;
*Switch life: more than 3 million of operations;
*Compatible with WindowsNT, Win98, Win2000, WinXP
*Interface: PS2,USB available;
*Lifespan: > 5 years;
*ISO9001:2000,CE, RoHS, FCC,IP65,IK07