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Basic features

Collection G-BLUETOOTH
Model GBA 400-4A
Warranty 2 years
Color red
Movement battery
Water resistance 200M/20ATM
Crystal mineral
Gender men's
Type digital / analog
Weight 66 g


Material plastic
Closure type pin buckle
Size 16-23 cm
Width 29-22 mm


Material plastic
Shape round
Diameter 51,9 mm
Thickness 18,3 mm


  • original packaging G-SHOCK
  • official guarantee


12/24-hour format, 5 daily alarms, Bluetooth G'mix, Timer - 1/1 minutes - 100 minutes, Phone Finder, Battery level indicator, LED light, LED indicator, Settings via your phone, Shock resistance, Scroll wheel function, Full auto-calendar, Airplane Mode (Offline Mode), Snooze, 1/100 second stopwatch - 1000 hours, World time
Detailed description

Detailed description

Case material: plastic

Mostly of rubber, resins or silicone. This type of material has high flexibility, is hypoallergenic, water resistant, and does not absorb sweat.

Movement: battery

The watch is powered by a battery.

Strap material: plastic

Mostly of rubber, resins or silicone. This type of material has high flexibility, is hypoallergenic, water resistant, and does not absorb sweat.

12/24-hour format

A choice of two ways to display time in 12 or 24 hour format. For example, 3:45 or 15:45.

5 daily alarms

5 independent alarms for flexible reminders of important events. You can set 5 different reminders.

Bluetooth G'mix

The watch is compatible via Bluetooth with mobile music application G'mix. To select tracks and adjust the volume used side turning wheel. Supported Phones - iPhone 6s Plus (iOS 9.2 to 9), 6s iPhone (iOS 9.2 to 9), 6 Plus iPhone (iOS 8.1.3 to 9.2), 6 iPhone (iOS 8.1.3 to 9.2), iPhone 5s (iOS7), iPhone 5c (iOS7), iPhone 5 (iOS7), iPhone 4S (iOS7), Samsung Galaxy S5 (Android 4.4), Galaxy Note3 (Android 4.3 to 4.4) and Galaxy S4 (Android 4.3 to 4.4).

Timer - 1/1 minutes - 100 minutes

Countdown timer with a maximum time of 100 minutes. Example: set a countdown for 30 minutes. After 30 minutes alarm starts.

Phone Finder

You lost your phone? By simply pressing a button on the watch, the phone alarm starts to ring and you can easily find it.

Battery level indicator

This feature is mostly found in solar-powered watches. It shows the battery charge status. If the indicator indicates a low level, just expose the watch to light and battery will recharge.

LED light

Illumination of the watch is provided by a diode (LED). Light is switched on by a touch of a button.

LED indicator

Blinking LED diode in the watch signals set alarm time, timer or clock signal.

Settings via your phone

Using Casio application on your phone you can set a world clock, alarm, timer, and other frequently used functions without using buttons on the watch. The settings are immediately sent to the watch.

Shock resistance

A unique design that eliminates the adverse effects of mechanical impact, vibration and shock, thus ensuring a high mechanical resistance of watches.

Scroll wheel function

Wheel allows easy and intuitive setting of alarms and timers.

Full auto-calendar

The display shows the current date. It is pre-programmed, so there is no need to set short and long month and leap years. Most watches have this pre-programmed date until 2099th.

Airplane Mode (Offline Mode)

Press once to set the watch to offline mode, e.g. turning off the connection to your phone (also turn off GPS if present) during the flight.


Is widespread alarm function. It provides repeated alarm - after stopping the alarm, the alarm will sound again in af few minutes.

1/100 second stopwatch - 1000 hours

Elapsed time, split time and final time are measured to the nearest hundredth of a second. The watch can measure up to 1000 hours.

World time

Display simply shows the times in selected major cities and areas of the world.

Water resistance: 200M/20ATM

Watches marked with water tightness 200M/20ATM are designed for swimming, snorkeling, and for diving with breathing apparatus. 200M/20ATM indicates the degree of water resistance standardized by ISO 6425. ISO tests include temperature changes, depth, pressure (water and air) for different times under rest and during manipulation with  the operative part of the watch. The dive models, subsequently performs the test of resistance to salt water and  the ability to cope with the watch positive pressure (decompression simulation).

Crystal: mineral

Currently the most widespread type of watch glass. It's very hard and has a high content of silicon thanks to which it's  highly scratch- and impact-resistant. However, it doesn't mean that it is completely scratch-resistant.

Closure type: pin buckle

The most widely used method of fastening, which is mainly used in leather and silicone straps. Simply turn on the buckle into the required holes as needed.

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Immediately upon receipt of the goods that you have decided to return, we will check the condition and if the product shows no signs of wear, isn’t damaged and its packaging is complete, we will return the money back to your bank account. If goods are not returned in their original packaging, with missing documents or labels, there are traces of use clearly found or it is otherwise damaged, we reserve the right to refuse the return of such goods.

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