Features: Case / Bezel Material: Resin Resin Band Quartz Movement Resin Glass LED Light 1/100-Second Stopwatch Daily Alarm Hourly Time Signal Auto-Calendar (28 Days For February) 12/24-Hour Format Regular Timekeeping Accuracy: ±30 Seconds Per Month Buckle Clasp Water Resistant Approximate Size Of Case: 34.5 × 30.4 × 8.6mm