EFR-507D-7AV#galleries http://www.casiojv.com/new_web/watch/new_watch.php?id=EFR-507D-7AV
Basic Info
  Case: Stainless steel
  Accuracy per month: ±20 sec
  Battery Type: SR927W
  Battery Life: 2 YRS
Function and Feature
Stopwatch - Accurate measurement of elapsed time with the touch of a button. The time figure indicates the maximum time measurement.Water Resistant - The "BAR" value indicates the number of atmospheres to which water resistance is ensured. 10 BAR means water resistance to 10 atmospheres. Watches marked "100m" have the same water resistance as 10 BAR watches.Mineral Glass - Hard glass resists scratching.Screw Lock Crown - The crown screws into the case to ensure water resistance.Screw Lock BackSolid Band
Double-lock, 1-press, 3-fold buckle
Specification - 5236
 1/20-second stopwatch
 Accuracy: ±20 seconds per month
 Approx. battery life
 Date display
 Regular timekeeping
 Size of case / total weight