A large standard EDIFICE chronograph. Use of an extra-thick inset dial creates a powerful, dynamic design. EFV-550D-1AV Sporty design 10 bar water resistant Specifications Basic Information Case size (L W H) 53 47 12.1 mm Weight 156 g Case and bezel material Case / bezel material: Stainless steel Band Stainless Steel Band One-touch 3-fold Clasp Water resistance 100-meter water resistance Power supply and battery life Approx. battery life: 3 years on SR920SW Exterior Glass Mineral Glass Back plate Screw Lock Back Watch Features Stopwatch 1/10-second stopwatch Measuring capacity: 59'59.9'' Measuring modes: Elapsed time, split time, 1st-2nd place times Accuracy Accuracy: 20 seconds per month Other features Regular timekeeping: Analog: 3 hands (hour, minute, second), 3 dials (stopwatch 1/10 seconds, stopwatch minutes, stopwatch seconds) Date display Operation Guide