
Seiko
A Seiko (TMI / Seiko Instruments) automatic GMT caliber — the export-market designation of the Seiko 4R34 — that adds a 24-hour fourth hand to the NH35 / 4R35 base. It runs at 21,600 vph with about 41 hours of power reserve, hacks and hand-winds, and has become the default affordable GMT for microbrands.
Deep Marine Explorer collection · 11 watches










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The Oceaneva Deep Marine Explorer GMT 1250m is an automatic watch, with a 42mm stainless steel case, 15.8mm thick, powered by the Seiko NH34 movement and a 41-hour power reserve. Water resistance is rated to 1250m, under a sapphire crystal. Manufacturer MSRP is $649.
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