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.
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Owners consistently praise the San Martin World Timer NH34 GMT SN0116 for exceptional value at €319/$250, highlighting the solid NH34 movement, durable aluminum/ceramic bezel with varied colorway options, comfortable beads-of-rice bracelet with quick-adjust clasp, and polished case finishing that feels more refined than the price suggests. The reserved, original-design aesthetic and 24-hour world-timer function that displays time across multiple zones simultaneously via a rotating central disc resonate strongly, though one owner noted the 24-hour dial numbers are small and require brief familiarization, and the world-timer bezel's practical utility is limited by daylight saving time variations; the dial lacks AM/PM indication. One owner observed +2 seconds accuracy after ten hours of wear.
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