G-Shock DW6900CB-4 Series watch by Casio. Shock resistant. 200 meter water resistant. EL backlight with afterglow. Multi-function alarm. Hourly time signal flash alert. Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarm. 1/100 second stopwatch. Measuring capacity: 00'00.00�-59'59.99� (for the first 60 minutes). 1:00'00-23:59'59 (after 60 minutes). Measuring unit: 1/100 second (for the first 60 minutes). One second (after 60 minutes). Measuring modes: elapsed time, split time, 1st-2nd place times. Countdown timer. Measuring unit: one 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). Auto-repeat. Auto calendar (pre-programmed until the year 2039). 12/24 hour formats. Accuracy: +/- 15 seconds per month. Battery: CR2016. Imported.