Nomos Glashutte Watch Club Automat Datum Sapphire Crystal 775. Club Automat Datum brings a quiet grandeur to the NOMOS collection. It measures 41.5 millimeters across, knows the date, and reveals the time even in the dark. Its extra robust case resists everything that life can throw at it. And is, now new in the Aqua series, water resistant to 20 atm, so 200 meters. When the pressure is on, above and below water, it never loses its cool. Likewise, the highly praised NOMOS automatic caliber DUW 5101, turning motion into time without fail.