Water Resistant: 100 m, The "BAR" value indicates the number of atmospheres to which water resistance is ensured. 10 BAR means water resistance to 10 atmospheres. Wearable around sinks, during swimming, poolside diving but not highboard diving and surfing.
Mineral Glass: Hard glass resists scratching.
Spherical Glass: The surface of the glass is rounded.
Screw lock Crown: The crown screws into the case to ensure water resistance.
Screw lock Back
Double-lock, 1-press, 3-fold buckle
Size of case/total weight: EF-558D., 51.0 X 49.3 X 14.1 mm/197 g.