Where Are Seiko Movements Made? Manufacturing Quality & What It Means for Custom Watches
Where are Seiko movements made?
This is one of the most common questions people ask when buying an automatic watch. The short answer: NH35 and NH34 movements are designed in Japan and manufactured in Japan or Malaysia, depending on the specific production batch.
The longer answer matters because "Made in Japan" is not a single factory. Seiko operates several facilities across Japan and Southeast Asia. Which facility built your movement depends on volume, product tier, and logistics — not quality.
Seiko's key manufacturing locations
Iwate Prefecture, Japan — the high-end workshop
The Grand Seiko Studio Shizukuishi in Iwate is where Seiko's finest mechanical watches are assembled by hand. This is home to the 9S-series high-beat calibres and the Spring Drive. It is not where your NH35 comes from — that level of hand-finishing is reserved for watches costing $3,000 to $50,000+.
Nagano Prefecture, Japan — mass production hub
Seiko Epson's Shiojiri facility in Nagano is one of the largest watch movement factories on Earth. It handles a huge share of Seiko's quartz and automatic production, including movements for Orient (fully acquired by Seiko Epson). This is where many NH35 and NH34 units originate.
Malaysia, Singapore, and China
Entry-level and mid-range Seiko models are sometimes assembled in Malaysia, Singapore, or China. For the NH platform, this usually means case assembly rather than movement manufacturing. The movement itself — the gears, the rotor, the mainspring — follows the same Japanese design specifications regardless of where the final case goes together.
That consistency is exactly why independent brands like Funny Items can build around NH35 and get the same performance as a factory Seiko diver. The calibre is the same calibre.
What "Made in Japan" actually means
Watch enthusiasts debate this endlessly. Here is the practical answer: a Seiko NH35 made in Malaysia and one made in Nagano share the same engineering, the same quality standards, and the same parts supply chain. The movement performs to the same spec.
In Seiko's model numbering, "J" at the end of a reference number means assembled in Japan. "K" means assembled outside Japan. But the movement inside is the same architecture.
For Funny Items, this matters because we assemble our cases in Guangzhou (we state this on our About page) while using Japanese-designed NH35/NH34 movements. Transparency matters. You should know what you are paying for.
Why Seiko movements are the standard for custom watches
There are three reasons the NH35 and NH34 dominate the custom and microbrand watch world:
1. Scale and reliability
Seiko produces millions of these movements. They are tested across millions of watches before yours is built. The failure rate is extremely low.
2. Serviceability
Any watchmaker who handles Japanese automatics can regulate or service an NH35. Parts are cheap and stocked worldwide. You will never be trapped by a $400 Swiss service on a $200 watch.
3. Cost vs performance ratio
A Swiss ETA 2824-2 costs 3–4x more at the wholesale level. The NH35 delivers about 80% of the daily experience for about 30% of the movement cost. That leaves budget for a better case, crystal, and lume — the things you actually touch.
How Funny Items uses Seiko movements
We build custom automatic watches around the NH35 and NH34 platforms. Here is what that looks like in practice:
- Sub Diver series: NH35 with date. Prices from $195 to $235. Stainless steel cases, mineral or sapphire crystal options.
- Vintage Bronze series: NH35 in bronze cases that develop a unique patina over time. From $199 to $259.
- Dress series: NH35 for cleaner dial layouts. DJ-style and day-date options from $149 to $199.
- GMT series: NH34 with true GMT complication. Pepsi, Batman, and meteorite dial options from $349 to $599.
- Quartz series: Miyota quartz for those who want accuracy without winding. From $63.
Every watch ships with a warranty against manufacturing defects. See FAQ and Return & Refund Policy for details.
Can you build your own watch with a Seiko movement?
Yes. We sell compatible parts for NH35 and NH34:
- Dials — sunburst, matte, gradient, no-date, and more
- Cases — 36mm to 43.5mm, stainless steel, bronze, PVD
- Hands — Mercedes, snowflake, cathedral, and other styles
- Straps — rubber, leather, mesh, Oyster-style bracelets
All parts are compatible with the NH35/NH34 platform. Mix and match to build your own design, or choose a finished watch from the collections above.
FAQ
Are all Seiko movements made in Japan?
The design and engineering are Japanese. Some units are assembled in Japan (Nagano), others in Malaysia. Both follow identical quality standards. For the NH platform, the difference is logistics, not performance.
Does "Made in Japan" mean better quality?
Not necessarily for the movement itself. Seiko's quality control is company-wide and factory-agnostic. An NH35 in a Seiko 5 and one in a Funny Items diver are the same movement.
Why do microbrands use Seiko instead of Swiss movements?
Because the NH35/NH34 gives reliable Japanese automatic mechanics at a price that allows investment in case quality, crystal quality, and finishing. Swiss alternatives would push the watch price up 2–3x.
Where are Funny Items watches assembled?
In Guangzhou, Guangdong, China. This is stated on our About page. The movements are Japanese-designed NH35/NH34. No reason to hide it.
Funny Items — custom NH35 / NH34 automatic watches and compatible parts, assembled in Guangzhou, shipped worldwide.