"I sent my Longines Master Collection Chronograph watch in for what I thought would be covered under warranty. The watch is less than 2 years old and I have worn it less than a dozen times. The last time I wore it I discovered it had very little reserve time, actually it would be stopped in the morning after being left out over night. The watch is advertised as having 54 hours reserve time. I keep all my watches in self-winding watch cases. I wore the watch for week before sending it back to Authentic Watches, winding it every morning for at least thirty times as recommended and wearing it all"