Stainless steel
Stainless Steel Band
One-touch 3-fold Clasp
50-meter water resistance
battery life: 3 years on SR621SW
Mineral Glass
150 to 205 mm
Moon phase
Accuracy: ±20 seconds per month
Regular timekeeping: Analog: 3 hands (hour, minute, second), 3 dials (date, day, moon phase)