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Operating Environment| operational temperature range | -10° C to +60° C |
|---|---|
| normal temperature range | 5° C to 35° C |
| loss/gain monthly rate | ±15 seconds |
Power| battery type | SEIKO SR927SW |
|---|---|
| crystal oscillator frequency | 32, 768 Hz |
| driving system | Step motor, 3 pieces |
Instructions on how to unlock the crown by turning it counterclockwise for operation.
Procedure to relock the crown securely by turning it clockwise while pressing it inwards.
Guidance on setting the hour and minute hands using the crown at the second click position.
Steps to correctly position the stopwatch hands to zero using the watch buttons.
Procedure to stop and reset the stopwatch hands when they are actively measuring time.
Instructions for resetting the stopwatch hands when they are not in motion.
How to perform basic elapsed time measurement using the stopwatch.
Technique for measuring and restarting elapsed time repeatedly.
Using the stopwatch to measure and release split times during an event.
Method for timing two competitors' finishes sequentially.
Process to unlock the security button by turning it counterclockwise.
Process to lock the security button by turning it clockwise.
Using the tachymeter scale to calculate average vehicle speed based on time taken.
Using the tachymeter scale to determine the average number of jobs completed per hour.
Instructions for measuring distance to light and sound sources using the stopwatch.
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