"GD-100GB-1DR – This lineup dresses up various models from popular series, including MUDMAN, in glossy black designs. The basic black motif is accented by gold gears and dials that give these watches a mechanical look

• Mineral Glass
• Shock Resistant
• 200-meter water resistance
• Case / bezel material: Resin
• Resin Band
• LED Backlight

Auto light switch, selectable illumination duration, afterglow.

• Flash alert

Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm

• 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)

• 5 alarms (daily or one-time)
• 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: 55 × 51.2 × 17.4 mm
• Total weight: 72 g
• LED:White"