Features: case / bezel material resin resin band 200-meter water resistance mineral glass shock resistant electro-luminescent backlight afterglow flash alert flashes with buzzer that sounds for alarm, hourly time signal, countdown timer time up alarm 1/100-second stopwatch measuring capacity 00'00 quot;00~59'59 quot;99 (for the first 60 minutes) 100'00~2359'59 (after 60 minutes) measuring unit 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) measuring modes elapsed time, split time, 1st-2nd place times countdown timer measuring unit 1 second countdown range 24 hours countdown start time setting range 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) other auto-repeat multi-function alarm hourly time signal full auto-calendar (to year 2039) 12/24-hour format regular timekeeping hour, minute, second, pm, month, date, day accuracy +/-15 seconds per month approx.Battery life 2 years on cr2016 size of case/total weight 53.2 x 50 x 16.3 mm/67 g elblue green