Bulova Accutron II Snorkel Watch

Though it’s not quite a diver, the Snorkel is more than just a dress watch. Equipped with a screw-down caseback and a screw-down crown at 4 o’clock, it’s suitable for swimming and other shallow-water sports. Topped with a domed mineral crystal, the Snorkel features an internal bezel that can be controlled using the non-screw-down crown at 2 o’clock. At 12 o’clock is a tuning fork logo—an homage to the original Accutron series—which also appears as a counterweight on the seconds hand. Applied hour markers are lumed, as are the baton-style hands.

Introduced in 2014, Bulova’s Accutron II pays tribute to the original Accutron series of the 1960s, which featured a revolutionary tuning fork movement used by NASA on space missions. You won’t find the Accutron II Snorkel watch in any such aircraft today, but it’s nonetheless equipped with another revolutionary timekeeping mechanism: UHF, which stands for Ultra High Frequency. This quartz movement vibrates at 262 kilohertz, or about eight times faster than a standard two-prong quartz crystal. Designed to provide a smooth-sweeping second hand, it’s not only completely silent but also hyper-accurate.