"Panasonic CF-W4 is a professional notebook designed for intensive usage even in complex conditions. The model successfully combines dimensions and weight of a usual ultra-slim notebook with very good ergonomics and functionality. Besides, it has a built-in optical drive and demonstrates excellent battery life. Moreover, this model has a high protection level against environmental conditions.
Although W4 is not a rugged notebook, it's still much more reliable and can survive much rougher handling than most other models. In particular, the notebook can survive liquid in its keyboard and rather high falls. The metal body resists compressions and impacts, when the notebook travels as luggage."