Glashutte Original, Senator Perpetual Calendar, Reference: 100-02-03-02-04, Stainless Steel on a Strap with a Stainless Steel Deployant Buckle, Automatic, Day Window at 10 O'clock, Month Window at 2 O'clock, Big Date at 4 O'clock, Moon Phase Between 7 and 8, Leap Year Indicator Beneath the Logo at 12 O'clock, Centered Sweep Seconds Hand, Diameter: 40.1 mm, Thickness: 12.4mm, Display Back, Sapphire Crystal, Water Resistant to 5 atm, , Excellent condition but watch only