This wireless keyboard and mouse combo delivers silent-key typing, precise cursor control and durability for busy school settings. Students and teachers enjoy full-size keyboard with F keys and number pad. Durable keys last up to 10 million keystrokes. Silicone cover tightly wraps keyboard to provide a liquid barrier tested to withstand frequent cleaning and disinfecting for safe, shared use. 1000 dpi advanced optical tracking mouse provides smooth control for easy clicking, scrolling and dragging. Contoured mouse supports allows left- or right-handed students and teachers to work with comfort and ease all day long. Out-of-the-box Chrome OSTM and Windows(R) compatibility. [1,2,3]  Number lock key excluded from 10 million keystroke life.  Tested to withstand 2,700 wipe cycles with alcohol; equal to 5 classroom sessions per day, 180 classroom days per year over 3 years.  This product has been certified by Logitech to meet Google's compatibility standards. Google is not responsible for the operation of this product or its compliance with safety requirements.