Every Ebert watch has its own unique number and story to tell. The watch has a Swiss clock movement made by Ronda Swiss. The glass is made of the anti-reflective sapphire crystal. The Ebert watch is 5 ATM water resistant and designed and constructed in Denmark to secure the high Danish quality. When you receive your watch, the box will contain a screwdriver for you to change the strap when and if you feel for a new look for your Ebert watch. Contrary to expectations if something happens to your watch, there is a two-year guarantee on it.