Cherry G84-4700 21 Key Numeric Pad Usb Light GreyDescriptionSpecificationsShipping Whether for numerical inputs, controls or for frequent number entry the programmable keyboard is the ideal accessory fornotebooks. All keys can be user defined with up to 24 characters per key. Individual keys with Gold Crosspoint contacts (ML technology) Designed for continuous usage over 20 million actuations per key Numeric block with 4 additional, individually inscribable function keys High level of reliability