History and Information of Seiko Diver’s Watches. Over time, the accumulation created sufficient pressure to blow off the crystals. ![]() The gaskets in use allowed the gas to seep in and build up inside the watch. Aside from damage inherent to the construction work being performed, helium gas penetration, present in the diver’s breathing mix, proved mortel to the timepieces. According to the letter, the 300m divers being produced by the brand were not sufficient in this environment. Commercial divers, unlike their recreational counterparts, often operate in saturation-living in pressurized chambers for days and weeks without resurfacing. In an occurrence that is almost legendary now, Seiko received a letter back in 1968 from Hiromi Oshima, a commercial diver operating out of Kure City in Japan. However, while this will certainly play a role in the brand’s (and other’s) dive watch program, the Seiko focus continued to be two-pronged during the decade, with the development of its much-mythologized Professional Diver series on the one hand, and the furtherance of their 150m divers by way of several iconic designs. The 1970s were a tumultuous time for the watch industry as a result of another Seiko development, the quartz movement. It is now available in slightly more accessible formats, like the SBDX and SBDC series-also called the Baby Marine Master. Seiko 6159-7001 ( Source)Īs such, the watch is highly collectible today, and like the 62MAS, received its own limited edition re-issue in 2018, with the SLA021/23/25-lovingly dubbed the Marine Master. Production of this watch was limited to a single year between 1968-1969. The bezel was available both as a countdown and an elapsed time variant. The monobloc case remained and it featured a screwed-down crown. Based on the manually wound Grand Seiko calibre 6159A, the 36 000bph-movement meant increased accuracy for the Diver’s 300m. Shortly after the release of the 6215-010, Seiko introduced its first hi-beat movement (10 vibrations per second). The monobloc construction eliminated the need for a caseback and played a large role in the increased water resistance. But, of equal note, the new watch used a monobloc case and an upgraded 35-jewel, hackable movement with a fifteen-minute elapsed time bezel scale. Other than the doubling of its water resistance, the new watch would establish the emblematic placement of the crown in the 4 o’clock position. Seiko pushed its own envelope two years later with the release of their first 300m diver. While large for a watch of its era, the silhouette of the 62MAS would become the seminal shape for skin divers of its generation. The 6217 automatic movement used in the watch, vibrated at a frequency of 18 000bph. It also had a distinctly large, unprotected crown. It sported a bi-directional bezel for calculating dive times, drilled lugs, easily legible luminous hours markers, and similarly lumed hands. The original came in a 37mm tonneau-shaped case with squared off lugs and was water resistant to 150m. The 62MAS moniker is assumed to have originated from the first two digits of its reference number (6217-8000/1) and the term “autoMAtic Selfdater.” Nonetheless, it established, or reinforced, a number of the elements which would become touchstones of dive watch design. Seiko’s official name for the watch was the 62 Seikomatic Calendar (Diver’s Watch). Much of what came after has simply been variations on a theme. That’s how important the Diver’s 150M was to the development of dive watches. Pricing and product assortment on may vary from retail, department, or specialty stores.Ask an untutored layman to draw you a dive watch and he will probably reproduce-to alarming similarity-the 62MAS. ![]() Subject to change or cancellation without notice. Offer valid on only through 7/31/23, 11:59PM PT. One free gift per order, cannot be applied to previous purchases. *Free gift automatically applied to qualifying carts w. FREE COLLECTIBLE STAR WARS PIN WITH ANY STAR WARS PURCHASE* We reserve the right to cancel this promotion at any time. Cannot be combined with other offers or discounts, or applied to previous purchases. Not valid at department, specialty, or company-owned stores, where products and promotions may vary/differ. Valid on only, now through 7/31/23 11:59pm PDT. Exclusions: New Arrivals, Limited Editions, preorder, and products not in stock. *25% off MSRP discount automatically applied, as shown on product pages of applicable models no code needed. SPECIAL OFFER: SAVE 25% OFF SELECT STAR WARS WATCHES*
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