The MK540 advanced is and instantly familiar wireless keyboard and mouse combo built for precision, comfort and reliability. The full sized keyboard features a familiar key shape, size and feeling and the contoured and ambidextrous mouse has been designed to fit comfortably into either palm. Plug and play wireless combo, familiar typing experience, contoured comfort mouse, reliable and hassle free. Keyboard:Black. Ergonomic design. Plug and play. Cordless. USB connectivity. Spill resistant. Mouse:Laser. Optical sensor. Nano receiver. 3 buttons. 10m range. Scroll wheel. Battery indicator light. Approximately 18 months battery life. General information:Batteries required 2 x AA (included) . Manufacturer’s 2 year guarantee. EAN: 5099206077454.