SEIKO Automatic Diver’s Watch Cal. 7S26. Description Manual.
This instruction booklet is for the Seiko Cal. 7S26 automatic diver’s watch. It explains how to start the watch, set the time, day and date, use the rotating bezel, and follow precautions before, while and after diving. It also describes care notes and lists specifications including 21,600 vibrations per hour, 21 jewels and 200-meter water resistance.
The booklet includes remarks on the luminous paint, which uses promethium-147, and notes on magnetic resistance, temperature range, chemicals, shocks and periodic checks. The specifications state that the watch is self-winding and suitable for scuba diving.
| Vibrations per hour | 21,600 |
|---|---|
| Operational temperature range | –10 ° C ~ +60 ° C (14° F ~ 140° F) |
| Driving system | Self-winding type |
| Jewels | 21 jewels |
| Magnetic resistance | 4,800 A/m (60 gauss) |
| Water resistance | Water resistant up to 200 meters |
| Diving suitability | Suitable for scuba diving |
Swing it from side to side in a horizontal arc for about 30 seconds. Once worn on the wrist, the mainspring is wound automatically by normal wrist movement.
After checking that the crown is screwed in completely, rinse the watch in fresh water, wash out all seawater, soil and sand, and wipe it thoroughly dry.
No. The booklet says not to use the watch for saturation diving using helium gas.
It can show up to 60 minutes of elapsed time.