Panerai builds nearly its entire catalog on three case silhouettes recognizable from across a room. All three share the brand's signature 'sandwich' dial, but each solves the crown device and bezel differently.
Its most identifiable feature is the crown-protection device: a side lever, screwed down, that seals the crown against water — patented by Panerai in 1956 for military use. No rotating bezel.
The Radiomir keeps Panerai's oldest silhouette: strap lugs built directly into the case itself, without the Luminor's screwed crown bridge. It's the line that has changed least from the original 1930s-40s dive watches built for the Italian Navy.
A 42mm steel case, Calibre P.900 with ~72 hours of power reserve, 300m of water resistance. Launched in 2019 as a sport evolution of the Luminor, it's the only one of the three silhouettes with an external unidirectional rotating bezel and dive scale — built explicitly as a real diving tool, not just styled as one.
If the screwed crown bridge is the feature that defines Panerai for you, the Luminor Marina. If you prefer the silhouette closest to the brand's historical origin, without that device, the Radiomir Black Seal. If you want the only one of the three built for real diving, with a rotating bezel, the Submersible. None of the three have verified market price data in Cazador yet.