The Greenwich Masters CELESTIAL Instruction Manual page 26

Caring for your watch
Wipe any dirt or moisture such as perspiration from the case and crystal
with a soft cloth.
Remove any dirt from a leather band with a dry cloth.
For a metallic, plastic or rubber watchband wipe with a damp cloth.
Remove the small amounts of dirt trapped between the crevices of the
metallic band with a soft brush.
Do NOT use solvents (such as paint thinner or benzene) for cleaning since
they may mar the surface of the band.
! Warning
Keep the battery out of reach of small children.
In the event a battery is swallowed consult a physician.
! Warning
If a depleted battery is left in your watch damage may be caused by the
leakage of battery fluid. Be sure to replace the battery promptly.
Always be sure to select a battery of the correct specifications when
replacing the battery.
25.
Handling of the battery
Battery Replacement