I bought it in August for my family, he found it stopped after flying to Tokyo, Japan in October. The Japanese in a watch store looked at it and told him that it is the kind of watch that is not repairable, that is , it is build for use once and throw, not a long life product. Then I thought of returning it. Unluckily, it was sold by Amazon,  Amazon return time was expired in September. So we have to contact Wenger to return or exchange. But Amazon might not be the authorized seller for Wenger product, that is Wenger, if finally I can know where I should contact, might refuse to deal with us. I saw even no any warrenty on the Amazon website. I have to say that I did it wrong for purchasing such an expensive thing online without carefully checking everything. I never had thought Wenger or Amazon will fail my trust.
We are fed up with such a mess, and just keep it as a lesson. So, you have to watch out before purchase this watch. It worked only 3 months, and not repairable, not returnable,no warranty, and is becoming cheaper and cheaper, as I paid 112 then for it, it is 110 or less now.