It's a domed acrylic crystal facial area, leather-based strap, and a light-weight Create that tends to make this view at ease use during the day. Have in mind: Acrylic crystal isn't as scratch-resistant as sapphire or mineral crystal; the leather-based band could possibly show put on more rapidly than anticipated. https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/