The experience in the watch is protected by sapphire crystal, and it is actually run by a high autonomy quartz motion and is waterproof to 30 meters. The timepiece is paired that has a black calf leather strap by using a pin buckle. Whether or not 1 is considering this https://www.jowissa.com/en-us/products/plain-mat-leather-watch-strap-e3-1442-l