This not-so-standard custom-built chronograph is a rugged balance of technical functionality and elevated style. The Sentry Chrono has a new and refined movement that's perfect for the thrill-seeking professional badass. Features. Custom molded hands and enamel filled 3 o'clock crown. Steel 3-link bracelet with stainless steel double locking clasp with micro adjust. Materials. Updated Miyota-OS20 Japanese quartz 6 hand chronograph with a 24hr subdial and date placement at 4 hour. Care. Dish soap and warm water. Colour: black