Zenith

Zenith has a long reputation for the quality and precision of their watches, with 1,565 1st-place precision awards to date. Zenith, is one of the few Swiss watch brands that make their own mechanical movements - the Elite (standard movement) and the El Primero (chronograph). The El Primero movement has a frequency of 36,000 alternations per hour. This high rate allows a precision of 1/10th of a second and a potential ~30% accuracy improvement over the more typical chronometer frequency of 28,000 alt per hour.

www.zenith-watches.com