• Partial ion plated
• Mineral Glass / Spherical Glass
• 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.

• Partial ion plated
• Mineral Glass / Spherical Glass
• 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: 49.5 X 45 X 11.5 mm
• Total weight: 157 g