To Preserve The Quality Of Your Watch; Daily Care; Performance And Caliber / Case Number - Seiko ASTRON User Manual

7

TO PRESERVE THE QUALITY OF YOUR WATCH

● The watch requires good daily care
• Do not wash the watch when its crown is at the extended position.
• Wipe away moisture, sweat or dirt with a soft cloth
• After soaking the watch in seawater, be sure to wash the watch in clean
pure water and wipe it dry carefully.
 If your watch is rated as "non-water resistant" or "water resistant for daily use, " do not
wash the watch.
Performance and caliber / case number 
Water resistance  P . 35
● Turn the crown from time to time
• In order to prevent corrosion of the crown, turn the crown from time to
time.
• The same practice should be applied to a screw lock type crown. 
● Press the buttons once in a while.
• Press the buttons once in a while to prevent corrosion of the buttons.
 If the display is changed by pressing any button, wait and leave it as is.

Daily care

P . 33
ASTRON 7X52 GPS SOLAR

Performance and caliber / case number

The case back shows the performance and
caliber / case number of your watch
Water resistance
Refer to P. 35
Magnetic resistance
Refer to page P. 36
P . 34 Caliber/case number
The number to identify
the type of your watch
 The above figures are examples. Both of them may be different
from the figure on the case back of your watch.
33