*Digital radio frequency technology (27MHz) and 256 ID codes offer you pin point accuracy without interference in range of 1.5 meters *Receiver with build in charger *High quality RF keyboard and RF optical mouse *Battery power saving mode with built-in battery charger and rechargeable battery *Advanced electro-optical technology, works on almost surfaces except glass *System requirements: DOS5.0/WIN95/98//NT/ME /2000/XP * Interface:PS2/USB/+P *Resolution: 400/800 DPI * Switch life:10 million times * Working current:35mA *Sleep current: 0.1mA *Working voltage:+3V¡À0.5V |