| - | 1/100-second stopwatch (ST1, ST2) | |
| Measuring capacity: 999:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Other: Auto start (ST1 only) | ||
| - | 12/24-hour format | |
| - | Accuracy: ±15 seconds per month | |
| - | Approx. battery life | |
| 2 years on CR2025 | ||
| - | Full auto-calendar (to year 2099) | |
| - | Button operation tone on/off | |
| - | Countdown timer | |
| Measuring unit: 1/10 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute and 1-hour increments) Other: Auto-repeat, progress beeper | ||
| - | Electro-luminescent backlight | |
| Auto light switch, 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 | |
| - | Low temperature resistant (-20°C) | |
| - | Multi-function alarms | |
| 5 independent multi-function alarms (4 one-time alarms and 1 snooze alarm) | ||
| - | Regular timekeeping | |
| Hour, minute, second, pm, month, date, day | ||
| - | Shock resistant (G-SHOCK) | |
| - | World Time | |
| 29 time zones (48 cities), city code display, daylight saving on/off | ||
| - | Size of case / total weight | |
| G-7900A ...... 52.4 X 50.0 X 17.7 mm / 68.2 g |
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