A legendary model from this brand available in an interesting colour option. Cheap, solid and has many practical everyday features. I encourage you to buy it!
Waterproof and shockproof sports watch with quartz movement. The 35mm diameter analog-digital dial is equipped with Auto-LED backlighting. The backlighting function can be activated manually or by raising the hand with the watch and zooming in towards the face. The mineral glass used to shield the watch's dial features a fifth grade on the Mohs hardness scale.
The use of the G-Shock system increases the watch's resistance to shock and mechanical damage. The model is characterized by high water resistance and is resistant to submersion up to 200 meters (20 bar), which allows safe use while swimming or even diving.
Daily time is displayed in 12/24-hour format. In addition, the watch is equipped with: 5 daily alarms with a snooze function, an expanded perpetual calendar, a stopwatch with a measurement length of up to 100 h and an accuracy of 1/1000 s, and a countdown timer for up to 24 h. The world time function allows you to read the time in different time zones.
The model is powered by a CR1220 battery, the manufacturer specifies a battery life of 2 years. The watch is set with a flexible strap made of plastic in black. The circumference of the strap is adjustable with a metal buckle.

Technical data
Model: GA-100TU-1A3ER
Material: quartz, plastic
Mechanism: quartz Miyota
Water resistance: 20 atm (200 m)
Time display: analog-digital
Envelope width: 50 mm
Thickness of the envelope: 16.9 mm
Dial diameter: 35 mm
Maximum strap circumference: 215 mm
Power supply: 1 x CR1220 battery
Weight: 72 g
Manufacturer: Casio, Japan
MILITARY is a premium dealer of Casio.
Casio is a Japanese brand founded in 1946, known worldwide as one of the leaders in consumer electronics. A breakthrough moment in the company's history was the launch of the G-Shock series in the 1980s, which gained cult status thanks to its exceptional resistance to shocks, water, and extreme environmental conditions. Casio is constantly developing its technologies, introducing features such as Tough Solar - a solar power system - and Wave Ceptor - time synchronization using radio waves, which ensures precision and reliability. The brand's watches are popular among both professionals and users looking for durable solutions for everyday use and outdoor activities. The first G-Shock model – DW-5000C, designed by engineer Kikuo Ibe in 1983, passed a drop test from the tenth floor and continued to function flawlessly, which became the foundation of the series' legend. Today, Casio is synonymous with innovation, reliability, and timeless design.
| Gender | Men's |
|---|---|
| Smartwatch | No |
| Type of mechanism | Quartz |
| Watch power supply | 1x CR1220 |
| Glass | Mineral |
| Alarm | Yes |
| Date stamp | No |
| Stopwatch | Yes |
| Backlight | Yes |
| Waterproof | 20 ATM / 200 m |
| Shockproof | Yes |
| NFC | No |
| Calendar | Yes |
| Compass | No |
| GPS | No |
| Barometer | No |
| Thermometer | No |
| Altimeter | No |
| Chronograph | No |
| Pedometer | No |
| Calorie counter | No |
| Heart rate measurement | No |
| Pulse oximeter | No |
| Weight | 72 g |
| EAN | 4549526379390 |
| Manufacturer code | GA-100TU -1A3ER |
| Brand | Casio |
| EAN |
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