Purchased in December 2014 we are in May, so 5 months, and there are already problems with the mechanism, it stops and delays regularly, and it's not a battery problem as it has been verified ! The seller, who is in Germany, offers me "kindly" to send back the clock, to my course fees, which it is out of question. For this kind of product under warranty, I will avoid in the future to buy outside of France !!!
