Nauticalia

The Casio "G-Shock" range is built ultra-tough - designed for people who have given up on other watches because they break! And this one won't need its battery changing, because it is powered by a solar panel built into the screen (full charge lasts approx six months in the dark), nor its time adjusting, because it receives a regular update from the super-accurate atomic clocks at Anthorn (UK time) or Frankfurt (central European time). It is also water resistant to 600ft, and has automatic (movement-activated) night illumination, 29 time zones, five alarms, snooze function, and a stopwatch.