Took my vintage 1970 Omega in for a) a fiber that somehow appeared under the crystal and b) regulating, as it was gaining over a minute/day. Dropped it off on a Tuesday, they contacted me the following week on Wednesday (8 days later) via text and informed me the watch was ready to picked up. They use a local watchmaker/repair gentleman who picks up periodically. To be a fair number of jeweler's that offer mechanical watch repair in GSO use the same gentleman; Diadem just facilitates the customer interaction part of the transaction. With that said, they were very professional, the watch was fully insured by them while in their possession, and the price was very reasonable as well. Will definitely use their service in the future for my other watches!