Key facts
- Brand
- Seiko
- Model
- 4R35
- Category
- Watches
- Industry
- Appliances
- Documents
- 2
- Languages
- EN · ZH
- Last added
- 2026-09-28
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Seiko 4R35/36/37/38/39/71 Mechanical Watch User Manual
This manual provides instructions for Seiko 4R35/36/37/38/39/71 mechanical watches, including features, component identification, and usage instructions. It details how to set the time and date for various models, noting specific procedures for screw-down crowns and the prohibition of setting the date between 9 PM and 1 AM. This manual is written in Chinese.
Read onlineSeiko 4R35 specifications
| Outside diameter | Ø 27.4 mm |
|---|---|
| Casing diameter | Ø 27.0 mm |
| Height | 5.32 mm |
| Power reserve | Approximately 40 hours |
| Number of jewels | 24 jewels |
| Lift angle | 53° |
| Vibration frequency | 21,600 vibrations per hour (5 beats per second) |
| Daily rate tolerance | ±20 s/d (4R35B) / ±30 s/d (4R36A) |
Source: Seiko Cal. 4R35B/4R36A Parts List and Technical Guide
All Seiko 4R35 documents by type
Disassembly, diagnostics and part numbers, for repair.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the power reserve of the Cal. 4R35B/4R36A movement?
The power reserve is approximately 40 hours from fully wound to stoppage.
How many jewels does the movement contain?
The movement uses 24 jewels.
How do I manually wind the watch?
Rotate the crown clockwise about 20 times if the watch has stopped completely.
From: Seiko 4R35/36/37/38/39/71 Mechanical Watch User Manual
When should I avoid setting the date?
Do not set the date between 9 PM and 1 AM to prevent malfunction.
From: Seiko 4R35/36/37/38/39/71 Mechanical Watch User Manual