This USB wired keyboard and mouse combo is built to last in busy school settings. Students enjoy comfortable keys a standard and familiar layout with full-size F keys and a number pad. Durable keys last up to 10 million keystrokes. The silicone cover tightly wraps the entire keyboard to provide a liquid barrier tested to withstand frequent cleaning and disinfecting for safe shared use. Bold bright white characters ensure all studentseven those with less-than-perfect visioncan easily read them. Ambidextrous optical mouse delivers smooth tracking for all-day use by left- and right-handed students. Out-of-the-box compatibility. [12] N/AN/A[1] Number lock key excluded from 10 million keystroke life. N/A[2] Tested to withstand 2700 wipe cycles with alcohol; equal to 5 classroom sessions per day 180 classroom days per year over 3 years.