Вот что в GD-100 есть:


SPECIAL FEATURES:
• Shock resistant (G-SHOCK)
• LED Backlight (Auto Light Super Illuminator)
A high-brightness diode is used to illuminate the face of the watch in one of variety of colors: blue, green, light blue, pink, yellow, or white.
The Auto Light feature illuminates the display when the watch is tilted towards the face.
Selectable illumination duration, afterglow.
• Flash alert
Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm, countdown timer progress beeper
• Multi time (4 different cities)
• World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city / World time city swapping
• 1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
• Countdown timer
Measuring unit: 1/10 second
Input range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
• Alarms
5 independent alarms (one-time or daily)
• Hourly time signal
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Button operation tone on/off
• Regular timekeeping: Hour, minute, second, pm, month, date, day
• Accuracy: ±15 seconds per month
• Approx. battery life: 7 years on CR2025
• Size of case / total weight
55.0 x 51.2 x 17.4 mm / 72 g
Супер иллюминатор, таймер обратного отсчета с шагом до секунды, батарея на 7 лет, флеш сигнал! Че та я сам заинтересовался этими часиками! Правда их только летом носить - шайба будь здоров!