• Mineral Glass / Spherical Glass
• Screw Lock Back
• 100-meter water resistance
• Case / bezel material: Stainless steel
• Stainless Steel Band
• One-touch 3-fold Clasp
• 1-second stopwatch
• Measuring capacity: 29'59
• Measuring mode: Elapsed time
• Regular timekeeping
• Analog: 3 hands (hour, minute, second),
• 3 dials (stopwatch

• Mineral Glass / Spherical Glass
• Screw Lock Back
• 100-meter water resistance
• Case / bezel material: Stainless steel
• Stainless Steel Band
• One-touch 3-fold Clasp
• 1-second stopwatch
• Measuring capacity: 29'59
• Measuring mode: Elapsed time
• Regular timekeeping
• Analog: 3 hands (hour, minute, second),
• 3 dials (stopwatch seconds, 24-hour, stopwatch minutes)
• Accuracy: ±20 seconds per month
• Approx. battery life: 2 years on SR621SW
• Size of case: 47.3 × 43 × 11.5 mm
• Total weight: 155 g