The MK545 Advanced is an instantly familiar wireless keyboard and mouse combination designed for precision, comfort, and reliability. The full-sized keyboard features a familiar key shape, size, and feel, while the full-sized contoured mouse provides hours of comfort. The contoured shape of the wireless mouse and the soft rubber side grips are designed to fit comfortably in your palm. With laser-grade tracking, side scrolling, and forward and back buttons, you stay in control. Convenient and essential key combinations give you direct access to media, calculator, and battery status functions. Pre-set Fn keys can even be customized in Logitech Options to meet your specific needs. Your keyboard will last for 36 months without needing new batteries, and your mouse will stay powered for 24 months. The keyboard is spill-resistant up to 60 ml of liquid, and the wear-resistant key presses ensure that your keys won’t fade quickly.