https://www.gnomonwatches.com/products/prospex-62mas-200m-automatic-black-ref-sbdc101

Look forward to the coming of spring with Seiko’s exceptional annual model releases. Recently, this Japanese powerhouse has launched a fantastic array of reissues for both its Presage and Prospex lines. The spotlight shines on its relaunch of the famed 60s dive watches, the Seiko Prospex 62MAS 200M Automatic Black Ref. SBDC101. This remake of Seiko’s classic design is fitted with upgrades that will be sure to impress.

Short for "Professional Specification", Prospex timepieces are built with the highest standards for professionals. Seiko presents the 2017 reissues of its coveted Ref. 6217-8001, also known as the 62MAS launched back in 1965: the limited-edition Ref. SLA017 as well as the Seiko Prospex Diver SBDC051 and SBDC053. With enhanced functionality, these watches take after the 1965 62MAS design.

Serving as a muse for this timepiece, the classic aesthetics and proportions of the Ref. 6217-8001 is upgraded in the 62MAS Black with new automatic movement and materials.

Delving into the heart of Seiko’s JDM watches, we marvel at the new engine that this renowned company has built. 2005 marks the year in which Seiko made the 6R15 engine, derived from its 7S26 movement. Using these stellar in-house manufactured calibres to build their JDM timepieces, Seiko’s 7S and 6R movements are popular among Seiko collectors.

Proven to be reliable and accurate, the 6R15 movement powers the SBDC051 and 53 ever since their launches three years ago. Always seeking to improve, Seiko unveils its latest engine, the 6R35 calibre, an upgrade from the workhorse 6R15. This movement is used to power the 62MAS Black, making this timepiece the first of its kind to feature Seiko’s new automatic calibre. Maintaining operation at 21,600 bph (3 Hertz) with hacking and hand winding capabilities, this engine has 24 jewels and a longer power reserve of 70 hours, a whopping 20 hours more than the 7R and 6S.