K400 is built with the same high quality and reliability standards that have made Logitech the #1 global leader for mice and keyboards³Based on independent sales data (in units) aggregated for Logitech mice and keyboards from major global markets including Canada, China, France, Germany, Indonesia, Republic of Korea, Russian Federation, Sweden, Taiwan, Turkey, UK, US (July ’19 – July ’20 period). Retail channel only.. Up to 18 months of battery life⁴Battery life may vary based on use and computing conditions. eliminates the hassle of frequent battery changes, with a handy on/off switch and power-saving technology that preserves battery life. The spill-resistant⁵Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse keyboard in liquid. design and durable keys keep you on track despite any mishaps.