This document describes the features and characteristics of mechanical watches, including using the main spring to provide power operation, manually rotating the crown to wind the main spring, the accuracy of mechanical watches varies depending on usage conditions, and the possibility of slowing down or speeding up due to strong magnetic forces.
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.
| Power Source | Main spring |
|---|---|
| Accuracy Unit | Per day |
| Full Winding Duration | Approximately 41 hours |
| Recommended Daily Wear | 10 hours or more |
| Water Resistance (Standard) | 3 bar |
| Water Resistance (5 bar) | 5 bar |
| Water Resistance (High) | 10/15/20 bar |
Rotate the crown clockwise about 20 times if the watch has stopped completely.
Do not set the date between 9 PM and 1 AM to prevent malfunction.
The watch may run slow or fast temporarily and components may become magnetized.
Only if marked with 5 bar or higher; standard 3 bar models are not suitable for swimming.