Casio Men's DW290-1V Classic Sport Watch, Black, DW-290-1V
Quartz movement
1/100 second digital stopwatch; measuring modes: elapsed time, split time, 1st-2nd place times
Hourly time signal; calendar (pre-programmed until the year 2029); 12and 24 hour formats
Accuracy: +/-15 seconds per month; battery CR2016; approx. battery life: 2 years
Water resistant to 660 feet (200 M): suitable for recreational scuba diving

Casio Unisex Digital Quartz Watch with Resin Strap GD-350-1B
World time; 35 time zones (100 cities), city name display, daylight saving on/off; 12/24 Hour Formats and Full Auto Calendar (pre-programmed until the year 2099)
Shock Resistant and 200M (660ft) Water Resistant
Auto LED Backlight (Super Illuminator) and Flash alert
Countdown timer, 1/100 second stopwatch,  measuring capacity: 999:59'59.99''; measuring modes: elapsed time, split time, 1st-2nd place times
Vibration Alert (Daily Alarms, Countdown Timer, Hourly Time Signal)