First watch ordered last year. Received wrapped in sort of small pocket without any authenticity certificate nor guarantee nor invoice. Did not work properly. Had to send hundred of mails before getting any answer from customer service. Then took them 6 months for 'repair' before admitting to refund the watch (without refund for the customs and without refund for my shipping costs). Second watch arrived beginning of August without again a authenticity certificate nor a guarantee nor an invoice. It stopped working after 2 days. Can not believe these watches are genuine. There so called 'customer service' is a scam. They do not reply to the asked questions and do not propose any helpful solution. Get away from these guys!!