The Lenovo 510 Wireless Combo Keyboard and Mouse compliments your desk with a simple yet elegant design. Easily connects wirelessly with PCs using one Nano USB receiver. The keyboard features a durable water-resistant casing well-equipped to handle the occasional spill. The island keys designed increases typing accuracy and comfort. The accompanying wireless mouse has ambidextrous design and features 1200 dpi optical sensor and a 12-month battery life with a single AA battery. Needless to say, your chord days are soon to be long behind you. Lenovo Wireless Keyboard Mouse Combo.