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HomeCulture NewsAn Introduction to Seiko's Caliber NH35A Motion

An Introduction to Seiko’s Caliber NH35A Motion


Seiko’s NH35A, referred to as the unbranded model of the Seiko caliber 4R35 motion, has turn into a well-used motion amongst micro manufacturers resembling Vostok, Lum-Tec, Spinnaker, and D1 Milano. Nonetheless, why is that this motion so readily utilized in sturdy dive watches, vintage-inspired items, and quite a few Seiko-enthusiast-modified items? Let’s dive in and discover out.


The motion began hitting the market in late 2011 and early 2012. It’s one of many best microbrand-beloved actions that’s an improve on the NH25 that got here out in 2008. The caliber has turn into a fan-favourite amongst Seiko followers, particularly those that modify watches or create their very own creations from scratch. This love for the motion primarily got here on account of its compatibility, affordability, and dependability.


NH35 has an accuracy vary of -20~+40 seconds per day underneath regular situations, in accordance with a take a look at executed by Time Module. The motion has a diashock system, a 41-hour energy reserve, and 24 jewels. It additionally has a vibration frequency of 21,600 vibrations per hour.

The motion is 29.36mm in casing diameter and has a carry angle of 53 levels. The NH35A is a hand-windable motion.

Watches Carrying the Motion

  • D1 Milano Subacqueo Lido Diver
  • Spinnaker Spence “Batman” Diver”
  • Vostok Europe Lunokhod-2 (NH35A-620A634)

Shopping for a NH35A Motion

NH35A is broadly out there for round £25 to £50, relying on the platform you might be shopping for it from. eBay, Namoki, and different watch-enthusiast retailers will inventory this merchandise on account of its important reputation. Nonetheless, earlier than shopping for, learn up the critiques and attempt to discover a respected purchaser, as knock-off actions are generally marketed because the NH35A (Sure, despite the fact that it’s comparatively low-cost to amass).

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