Other features include a spill resistant keyboard, built-in handle, and a shock mounted hard disc drive. As with other Toughbook models, the 53 has a range of optional features that the buyer can pick from, this include mobile broadband connectivity, fingerprint reader, and even a hard disc heater for extreme conditions. At 5.8lbs the Panasonic Toughbook 53 is by no means a feather light ultraportable. This a notebook computer designed to resist the elements, for users demand such needs.