https://chronometercheckblog.com/seiko-6r35-movement/

The Seiko 6R35 is an automatic movement found in various Seiko Prospex and Presage watches. It is an upgraded version of the 6R15 with an improved power reserve.
It features 24 jewels, a 70-hour power reserve, and accuracy rated at -15/+25 seconds per day.
Seiko 6R35 Specifications
Manufacturer Seiko
Caliber 6R35, 6R35A
Movement Type Automatic
Diameter 27.40 mm
Casing Diameter 27 mm
Height 5.25 mm
Jewels 24
Hacking Yes
Hand-Winding Yes
Vibrations Per Hour 21,600 BPH
Shock System Diashock
Regulator ETACHRON
Power reserve Around 70 hours
Magnetic resistance 4,800 A/m (60 gauss)
Winding direction Bi-directional
Country of manufacture Japan
Known Watches Seiko Presage, Seiko Prospex

Seiko 6R35 Accuracy
The accuracy of the Seiko 6R35 is rated to -15/+25 seconds per day.
Unlike many other Seiko movements, however, users find their watches that use the 6R35 tend to have accuracy on the outer bounds or even slightly outside its specified range.

My SPB197, which uses the 6R35, runs at a not-so-impressive -10 seconds per day. While not awful, I would expect a bit better considering it was a $700+ watch.

Common 6R35 Problems
Users have reported wildly varying accuracies with the 6R35.

Further, the 6R35 can not easily be regulated to improve its accuracy. The 6R35 has been noted to be particularly fragile and difficult to regulate. Unless you’re a very seasoned watch tinkerer, it’s best to take this to a professional.

Watch the video below to learn how to regulate the 6R35 movement, as demonstrated on an SPB143




最後修改時間: 2025-07-16 13:19:23

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Shenzhen¹
1 Let me first tell you something important, which you may not know. Proudly, the production is located in Shenzhen, a region known for hosting the best consumer to near-luxury watchmaking in the world (and we say world because many of the major European brands, including Swiss watchmaking companies, Japanese and American brands produce here partially or totally). And not only that, Shenzhen is becoming, by leaps and bounds, a futuristic city, cradle of companies such as the all-powerful technology companies Foxconn (Apple supplier), Xiaomi or Huawei...

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OX® has its headquarters in the United States, and meticulously manufactures each watch with utmost dedication in Shenzhen, within a new facilities center. The OX® SZX Center manufactures the main parts like the case molds, crowns or clasp, and receives components from the best suppliers, including the premium true GMT caliber sourced by Miyota® Japan factory (Citizen® Movement Division) and personalized in-house, which then come together to create a FROG300 timepiece.

最後修改時間: 2025-07-11 11:35:48

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Titanium Grade 3i¹ bezel, Sandblasted finish. The sealing is ensured by OX®'s 'T-shaped' gasket. In the Gold Series, it is IP gold finished
Screw-down case back, with titanium G3i and Gold IP (Ion Plated) finish, with housing for the ID+SYS™ system, O-ring to ensure WR sealing. The ID+SYS™ blue part is injected plastic. In the Gold Series 18K, the caseback piece is in solid white gold 750 with Platinium alloy.
Complies with ISO 6425 for saturation diving up to WR 300 meters / 30 atm / 1,000 ft (Tested in samplings up to 40 atm pressure).
Personalized 9075 premium caliber from MIYOTA® (Citizen® Movements Division, made in Japan. An automatic caliber with 24 jewels, beating to 4Hz/28.800 Vph, with 42H power reserve. Accuracy of +15/-10 seconds per day¹, with True GMT independent second time 24H complication and date at 20:00








最後修改時間: 2025-07-10 08:44:39