Cal. PF337 is a modular automatic dual-time movement based on Parmigiani Fleurier Cal. PF331. The dual-time module is much larger than the base movement, and includes a second crown at 2:00 to adjust the second timezone. Unlike most second-timezone watches, it can be adjusted to 15 minute or half hour timezones, not just whole-hour differences. It was the first such movement when it was introduced in 2010.
- Parmigiani Fleurier Tonda Hemisphères, Ref. PFC231