THE WORLD'S LIGHTEST AND THINNEST SEMI-RUGGED LAPTOP IN ITS CLASS. The new Toughbook? 54 laptop from Panasonic uses the latest advances to create a laptop 2 lbs. lighter and 0.5? thinner than the competition. It features a spill-resistant, full magnesium alloy design, hard drive heater, backlit keyboard and is available in four different models to suit every need. The Toughbook 54 has a wide range of integrated options, such as dedicated GPS, 4G LTE mobile broadband with satellite GPS, antenna passthrough, and insertable and contactless SmartCard readers. It is the only semi-rugged laptop that offers an optional 2nd battery allowing hot-swap battery replacement without the need to shut down or hibernate. It is also the only laptop in its class to offer dual drives, another feature that makes the Toughbook 54 one of the most versatile and advanced semi-rugged notebooks on the market.