This Casio Vintage AQ230A-2A1 watch with duo display is versatile, charming, classic, and functional. The piece is so versatile in design that it is sure to complement every occasion. A statement piece that can easily be style up and down. - Module No. 5154- 38.8 x 29.8 x 8.1mm Case Size - 47g Weight- Dual time- Stopwatch- Measuring mode: Elapsed time- Daily Alarm- Hourly Time Signal- Auto-calendar- 12/24-hour format- Regular timekeeping ? Analog: 2 hands (hour, minute) ? Digital: Hour, minute, second, pm, month, date, day- Accuracy: 30 seconds per month- Approx battery life 3 Years on SR920W