Casio Ladies Digital Stylish Watch with Daily Alarm, and Digital Stopwatch, with Countdown Timer, Hourly Time Signal, and Auto Calendar Casio Women's Daily Alarm Digital Watch, with Sporty Classy Design 1/100 Second Digital Stopwatch Measuring capacity: 59'59.99" and Measuring modes: Net time Countdown Time Measuring unit of 1/10 second, and is Water Resistant, feature convenient Hourly time signals Auto Calendar, with amazing Accuracy: +/-30 seconds per month Approx. battery life: 2 years, Module 526/3191, Size Of Case / Total Weight; 24.0 x 24.5 x 7.5mm / 11g