CASIO
Model number: EFR-537RBK-1ADR
Dial window material: Mineral
Case material: Stainless Steel
Case diameter: 50*45 mm
Case Thickness: 13.8 mm
Case color: Blue
Dial color: Black
Band Material: Stainless Steel
Band color: Black
Band length: Men's
Band width: mm
function: 1-second stopwatch
Measuring capacity: 59'59
Measuring modes: Elapsed time, split time, 1st-2nd place times
Date display
Regular timekeeping
Analog: 3 hands (hour, minute, second),
3 dials (stopwatch minutes, stopwatch seconds, 24-hour)
Accuracy: ±20 seconds per month
Approx. battery life: 2 years on SR920SW (3 hands and 3 dials)
2 years on CR1616 (Light 16 [sec/day])
Movement: Quartz
Water resistant depth: 100 Meters
Item weight: 170 gr