This manual introduces the display screen, buttons, and timing function of the watch. The timing function screen is used to set and view the current time and date. The watch supports multiple time display formats, such as 12-hour and 24-hour formats. The watch also has a dynamic display function, which can automatically change the time display style on the timing function screen based on the watch's rotation and arm movement. The watch also has a function to set the time and date.
This manual describes the operation of the 3165/3251 watch, covering the timer, stopwatch, alarm, second‑time display and automatic illumination features. Detailed steps show how to start, adjust and stop each function using the @ key and other controls.
The specifications section lists accuracy, battery type, LED count and other technical data, while the FAQ answers common questions about setting the timer, battery life and illumination. This manual is written in Japanese.
| Accuracy at room temperature | ±30 seconds per month |
|---|---|
| Battery type | CR1616 |
| Battery life | ≈2 years under specified conditions |
| LED count for illumination | 2 LEDs |
| Timer range | 1 to 60 minutes |
| Stopwatch resolution | 1/100 second |
Press the @ key to enter timer setting mode, then use the keys to adjust the minutes from 1 to 60.
Under the specified daily usage conditions, the CR1616 battery can power the watch for about two years.
The watch uses two LEDs to illuminate the display.
The watch maintains an accuracy of plus or minus 30 seconds per month at room temperature.