It's a domed acrylic crystal confront, leather strap, and a light-weight build that helps make this observe snug wear each day. Bear in mind: Acrylic crystal isn't as scratch-resistant as sapphire or mineral crystal; the leather-based band may well clearly show put on a lot quicker than anticipated. Further to https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/