It's got a domed acrylic crystal deal with, leather strap, and a lightweight build that makes this watch comfy have on during the day. Remember: Acrylic crystal isn't as scratch-resistant as sapphire or mineral crystal; the leather band could show wear more rapidly than envisioned. Hailing from Redondo Beach front, https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/