... :106Keystroke life:>10,000,000timeskey travel:3.2±0.3mmkey switch elasticity:55±7gworking voltage:5.0VDC ± 5%working current ... ,sensitive touch keys, with high elasticity silicone rubber,silent switch feeling,feel comfortable,waterproof and durable,clear printing letters with ... gloss oil on the surface.with 1multimedia shortcut key,easy to operate.Applicable system: PC system:windows 95/ ...