F91W-1

The Casio F91W digital sports watch is a tried and true style for casual and sporty wear. With daily alarm, hourly chime signal, and automatic calendar (automatically sets date for months with 31, 30, 29, 28 days!) you never need to worry about missing an appointment again. Accuracy: +/-30 seconds per month. Water Resistant. Micro Light. Approx. battery life: 7 years. Battery CR2016.Module 593.