• Mineral Glass
• Partial ion plated
• Screw Lock Back
• 100-meter water resistance
• Case / bezel material: Stainless steel
• Stainless Steel Band
• One-touch 3-fold Buckle
• Regular timekeepingAnalog: 3 hands (hour, minute, second),3 dials (date, day, 24-hour)
• Accuracy: ±20 seconds per month
• Approx. battery life: 2 years

• Mineral Glass
• Partial ion plated
• Screw Lock Back
• 100-meter water resistance
• Case / bezel material: Stainless steel
• Stainless Steel Band
• One-touch 3-fold Buckle
• Regular timekeepingAnalog: 3 hands (hour, minute, second),3 dials (date, day, 24-hour)
• Accuracy: ±20 seconds per month
• Approx. battery life: 2 years on SR621SW
• Size of case/total weight: 49.6 X 43 X 10.8 mm/153 g