The SEIKO Cal. 7T62 analogue quartz watch user manual explains time setting, alarm, stopwatch, tachymeter, battery replacement and specifications.
This manual provides step‑by‑step instructions for operating the SEIKO Cal. 7T62 analogue quartz watch. It covers setting the time, adjusting the stopwatch hand position, setting the date, using the single‑time alarm and tachymeter, and changing the battery.
Technical specifications such as crystal frequency, accuracy, temperature range, driving system and battery type are listed at the end of the document, along with safety warnings for battery handling.
| Frequency of crystal oscillator | 32,768 Hz |
|---|---|
| Loss/gain (monthly rate) | ±15 seconds at normal temperature range (5 °C ~ 35 °C) |
| Accuracy of the alarm | ±1 minute |
| Operational temperature range | –10 °C ~ +60 °C |
| Driving system | Step motor, 4 pieces |
| Display system | Hour, minute and small second hands; date in numerals; stopwatch up to 60 minutes |
| Battery | SEIKO SR927W (1 piece) |
| Integrated circuit | C‑MOS‑IC (1 piece) |
Pull the crown out to the second click when the small second hand is at 12 o’clock, then turn the crown to set the hour and minute hands.
Press button A for 2 seconds to reset the stopwatch minute hand, and press button B repeatedly to reset the 1/5‑second hand to the “0” position.
The alarm is accurate within ±1 minute.