Case / bezel material: Stainless steel

Stainless Steel Band

One-touch 3-fold Buckle

 200-meter water resistance

Mineral Glass 

Screw Lock Crown

Screw Lock Back

Anti-reverse Bezel

Case / bezel material: Stainless steel

Stainless Steel Band

One-touch 3-fold Buckle

 200-meter water resistance

Mineral Glass 

Screw Lock Crown

Screw Lock Back

Anti-reverse Bezel

Regular timekeeping 

Analog: 3 hands (hour, minute, second),

3 dials (day, day of the week, 24-hour) 

Accuracy: ±20 seconds per month

Approx. battery life: 2 years on SR621SW

Size of case/total weight: 50.5 X 45 X 11.1 mm/155 g