The Lenovo 300 USB Combo is a keyboard and mouse combination that features a modern, space-saving design giving your desk a clean and stylish appeal. To go along with its design, the keyboard features a waterproof exterior keeping away accidental spills. Matching its practical mate, the full-size mouse is an ergonomic masterpiece, providing all-day comfort at your fingertips. This mouse and keyboard combo is perfect for the office, school, or home – anywhere that you need devices that just work. Simple and easy to use, the USB optical mouse sports a clean and streamlined design that feels just right in the hand. The ergonomic full-size design provides a comfortable grip for all-day comfort. This USB mouse offers an ambidextrous shape, so it's easy to use with either the left or right hand. The computer keyboard boasts a 2. 5 zone island key design that makes typing a joy. You'll work smarter and more efficiently with a row of hot keys, dedicated arrow keys, and a separate number pad area. In addition, the Lenovo 300 USB Keyboard passed rigorous testing simulations to ensure maximum reliability.