It's a domed acrylic crystal confront, leather strap, and a lightweight Construct that tends to make this watch comfy use during the day. Bear in mind: Acrylic crystal isn't as scratch-resistant as sapphire or mineral crystal; the leather band could possibly demonstrate wear faster than envisioned. The nautical style and https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/