1) 68 keys,small size with integrated optical trackball;
2) Protruding long travel(2.0mm)keys with graved graphics, excellent tactile feel;
3) Specially designed to operate in harsh environments, making them ideal for
web payphones, internet kiosks and other applications in public places.
4) Built from stainless steel,high vandal-proof.
5) Dust-proof and liquid-proof, ...
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