For the active man who refuses to choose between ruggedness and elegance, the Casio ECB-900DB-1AER (51.5 mm) combines an ion-plated steel case and bracelet with features designed for the field. Bluetooth® Smart connectivity ensures seamless synchronization with Android, while the Super Full Auto LED light guarantees immediate readability in all conditions. The 1/10-second stopwatch, 200-lap memory, 5 daily alarms, and automatic calendar make it a precise tool for multisport sessions. With 10-bar water resistance—including swimming and snorkeling—and mineral glass, it withstands demanding environments without losing its poise.