Casio EF-539D-1A2

    Case size (L× W× H)
    53.5 × 48.5 × 11.5 mm
    Weight
    198 g
    Case and bezel material
    Case / bezel material: Stainless steel
    Band
    Double-lock, 1-press, 3-fold Clasp
    Stainless Steel Band
    Solid Band
    Water resistance
    100-meter water resistance
    Power supply and battery life
    Approx. battery life: 2 years on SR927W

    Glass
    Mineral Glass
    Back plate
    Screw Lock Back
    Bezel features
    Tachymeter
    Surface treatment
    Partial ion plated

    Stopwatch
    1-second stopwatch Measuring capacity: 11:59'59 Measuring mode: Elapsed time
    Accuracy
    Accuracy: ±20 seconds per month
    Other features
    Regular timekeeping: Analog: 3 hands (hour, minute, stopwatch seconds), 3 dials (timekeeping second, stopwatch hours, stopwatch minutes)
    Date display