most batteries that run of a battery are controlled by a frequency crystal or electronic setting and is not adjustable
however take it to a watchmaker or jeweller as it may be adjustable using their instruments
Anon, looks like there is a defect in that model of watch, return for refund and purchase a different model.
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Jennifer, have the battery changed at a jewelers, they do not charge much as long it is not a high class place. If the battery does not fix it, then it would have to be some kind of electrical fault in watch.
