Casio G-Shock Digital Pink Bio Based Resin Quartz DW-6900RCS-4 DW6900RCS-4 200M Men's Watch The Casio DW-6900RCS-4 features 200m water resistance, a screwed case back, and a buckle clasp. It has a bio-based resin case and strap, mineral crystal, and a silver dial with a digital display. The watch has a quartz movement and is shock-resistant and includes a 1/100-second stopwatch, countdown timer, hourly time signal, multi-function alarm, and flash alert. Additional features include an LED backlight, full auto-calendar, regular timekeeping, 12/24-hour display, and month, day, and date display.