Bought one for my wife in 1999 under 5 years warranty by Siber Hegner then in 2001 LVMH taken over.
Need repair sent to them but don't honor the warranty so I write to their LVMH HQ Switzerland got reply only our local service centre
accept the warranty n now LVMH sold to Movado group.
In 2013 need the local service centre Sincere/Cortina at UOA don't know which forgot, the technician there no more spare part here.
They need to sent to HQ Switzerland n very expensive.
Now I think you can check with Cortina they are AD