Casio G-9100R-4DR

1/100-second stopwatch Measuring capacity: 23:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Other: Target time alarm, auto start

12/24-hour format

Accuracy: ±15 seconds per month

Approx. battery life 7 years on CR2025

Full auto-calendar (to year 2099)

Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat, time up alarm, progress beeper on/off

Button operation tone on/off

Electro-luminescent backlight Auto light switch, dual illuminator, selectable illumination duration, afterglow

Flash alert Flashes with buzzer that sounds for alarms, hourly time signal, countdown time up alarm, countdown timer progress beeper, and stopwatch auto start

Hourly time signal

Moon data (Moon age of the input data, moon phase graph)

Multi-function alarms 3 independent multi-function alarms (2 one-time alarms and 1 snooze alarm)

Regular timekeeping Hour, minutes, seconds, pm, year, month, date, day

Rust resistant

Tide graph (Tide level for specific date and time)

World Time 29 time zones (48 cities), city code display, daylight saving on/off

Size of case / total weight G-9100R ...... 51.0 X 46.0 X 16.4 mm / 53 g

Original box and manual