Panerai, which introduced its first blue-dialed watches earlier this year, continues to expand its palette with the launch of three new models with dark green dials that evoke the brand’s storied history as a provider of timekeeping instruments to military divers in the 1930s and ’40s. Here’s what you need to know about the new watches.

The watches represent three distinct Panerai case types ? Radiomir, Radiomir 1940, and Luminor 1950 ? and a variety of different functions. The dark green “sandwich” dials are enhanced with contrasting luminous beige hour markers and gilded hands. All the models come mounted on natural brown leather straps with contrasting beige stitching and a stamped “OP” (Officine Panerai) logo. All are equipped with hand-wound mechanical movements produced in-house at the Panerai manufacture in Neuchâtel, Switzerland. The Panerai Radiomir 8 Days Titanio (Ref. PAM00735) has a brushed titanium case measuring 45 mm in diameter and sporting a polished, stationary bezel. The case shape, with its conical winding crown, has its roots in a model from 1936. The small seconds are displayed on a subdial at 9 o’clock, and the date, directly across the dial at 3 o’clock, is visible through a round magnifying lens integrated into the sapphire crystal. The movement ? visible, as on all three new models, through a clear sapphire caseback ? is Panerai’s Caliber P.2002, which stores 192 hours, or eight days, of...