Features: Case/Bezel Material: Resin Stainless Steel Bracelet Resin Crystal Digital Display Chronograph Function LED Backlight Afterglow 1/100-Second Stopwatch Daily Alarm AM/PM Display Hourly Time Signal Auto-Calendar (Auto Calendar Set At 28 Days For February) 12/24-Hour Format Regular Timekeeping Accuracy: ±30 Seconds Per Month Day And Date Display Solid Case Back Fold Over Clasp 50M Water Resistance Approximate Size of case: 43.1 x 41.2 x 10.5mm