Silent wireless keyboard and mouse, Logitech MK295 Reduce the clicking and typing noise by 90% while working in silence. Specifications for technology Wi-Fi range: 33 feet (10 meters) SilentTouch Keyboard Technology Keyboard height adjustment design that is resistant to spills. Wireless 2.4GHz (10 meters) USB receiver that is nano Caps lock indicator light Power switch, on/off An alkaline battery and two AAA batteries A mouse Technology for Silent Touch compact, curved form. responsive and fluid cursor control Power button on/off One alkaline battery (AA battery) Click Here for Additional Information. LOGITECH MK295 Silent Wireless Keyboard/Mouse Combination MORE FOCUS, LESS NOISE Avoid distractions and maintain your work focus. Presenting the Logitech MK295 Silent Wireless Combo, which features SilentTouch, a proprietary Logitech technology that reduces keyboard and mouse noise by over 90%. The clicking and typing feel is the same.