Slim and elegant, the new X22 notebook personal computer from Samsung Electronics was designed to impress with its rich specifications - including Intel Celeron technology, a 14.1-inch display, a 120-gigabyte hard drive and an eight-cell battery. But attention is also due to its Silver Nano anti-bacterial keyboard. Samsung uses a coating of molecule-sized silver particles on the keyboard to sanitise it. The company says Silver Nano ions neutralise more than 650 types of bacteria. The X22 laptop, which weighs 2.39kg including the battery, costs HK$10,980.