By Gary Girdvainis
Under a domed crystal, a visible bubble quickly separates a U-Boat watch from most other watches. As this bubble dances over the dial, it actually serves the purpose of accommodating temperature variations that might otherwise damage the watch with the expansion of the limpid liquid within.
The effect of the dance is amazing as the colorful U-Boat dials seems to leap out of the watch and project themselves onto the domed crystal, while the refraction effect mitigates any need for an anti-reflective coating.
The U-Boat Darkmoon is a full-sized watch with a crown-left position on its 44mm stainless steel and sapphire case. Inside is a Ronda 712.3 quartz movement powered by a quick-change battery that overcomes the problem of needing special equipment to change the power supply.
Water resistant to 50 meters, the U-Boat Darkmoon is available in a colorful array of dial options. Price: $1,420.
One caveat on owning this very cool quartz watch is that you do need to take care not to leave it in excessive heat or sunlight for too long as this may damage the watch – but that is sound advice for almost any watch.