It's a domed acrylic crystal confront, leather-based strap, and a light-weight Develop that helps make this enjoy comfortable use during the day. Keep in mind: Acrylic crystal isn't as scratch-resistant as sapphire or mineral crystal; the leather band may clearly show use speedier than expected. We work each day to https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/