Top Calibers: Japanese Watches With Hidden Superpower

What: This caliber boasts a unique combination of mechanical and quartz parts - think of it as a mechanical watch with electronic precision What's new: With the Spring Drive celebrating its 20th anniversary this year, Seiko has upgraded the movement into the manual-winding Caliber 9R02 with a power reserve of 84 hours, an increase from the regular 72 hours The barrel, which is visible on the caseback, is shaped like a bellflower, the symbol of Shiojiri, the city where Seiko's Micro Artist Studio that makes Caliber 9R02 is located.

The watch: Caliber 9R02 powers two new Grand Seiko Elegance watches featuring a slim platinum case Also see: No detail too small for these Japanese watches What: Boasting an accuracy of +/- one second per year, Caliber 0100 is the most accurate movement, quartz or mechanical.

The watch: The look of the watch is classic minimalist and there are three versions to choose from - a white gold case with an ivory dial and two titanium models, one with a metallic black dial and the other a mother-of-pearl dial. . Source