Casio G-Shock Original GA-100-1A1ER Watch

Water-resistant and shockproof sports watch with quartz movement. Equipped with Auto-LED backlight. The hands are coated with a fluorescent Neobrite layer, allowing time to be read in the dark. The analog-digital dial is protected by mineral glass with a Mohs hardness level of 5.

Robust construction

The use of the G-Shock system and a carbon-reinforced case increases the watch’s resistance to shocks and mechanical damage. The mineral glass covering the dial has a Mohs hardness level of 5.

The model features high water resistance and is resistant to submersion up to 200 metres (20 bar), making it safe for swimming and even diving.

The case is designed to protect the movement from the effects of magnetic fields in accordance with ISO Standard 764.

Dial, Auto-LED backlight, Neobrite

Analog-digital dial with a diameter of 35 mm allows time display in 12/24-hour format. It is equipped with Auto-LED backlight, which can activate automatically when the wrist is turned toward the face. Hands coated with fluorescent Neobrite layer allow for operation in low-light conditions or complete darkness.

Flexible strap

Comfortable wear is ensured by an black-colored elastic strap fastened with a metal buckle. The material is resistant to moisture and sweat, making it ideal for various activities.

5 alarms, calendar, stopwatch, timer, world time function, average speed measurement

The watch is equipped with:

• 5 daily alarms with snooze function
• advanced perpetual calendar
• stopwatch with a measurement duration of up to 100 hours and 1/1000 second accuracy
• countdown timer up to 24 hours
• world time function for checking the time in different time zones
• average speed measurement over a travelled distance

Main features

• G-Shock system
• water resistance up to 200 meters
• durable construction
• Auto LED backlight function
• fluorescent Neobrite coating on the hands
• quartz movement
• calendar
• stopwatch
• timer
• world time function
• 5 alarms