Introducing the latest 2100 modelthe first-ever in this line to feature chronograph functionality complete with a sleek, black dial. Equipped with Tough Solar technology and connects seamlessly to your smartphone via Bluetooth® for precise timekeeping. Dimensions: 51. 3 mm x 46. 3 mm x 12. 4 mm. This new GMC-B2100 is fully metal, offering the world-leading protection you know and expect from G-SHOCK. Were throwing it back to the iconic 1983 design with the octagonal bezel and dimpled band, now reimagined in sleek metal with a stainless-steel case, bezel, and band. The bezel, crafted in a detailed, multi-step process of forging, cutting, and polishing, features a stunning finish with a circular hairline treatment on the top surface and mirror polish on the angled edges. Connects seamlessly to your smartphone via Bluetooth® for precise timekeeping through the dedicated app. Features a high-brightness LED light, and a variety of other practical features.