Casio G-Shock GST-B400-1AER watch Wrist watch Black, Stainless steel

Bluetooth® Smart
The watch is equipped with energy-saving Bluetooth® technology, which offers power-saving data transfer at the push of a button. The watch can connect to a smartphone wirelessly via Bluetooth®, enabling access to a wide range of useful functions.

Smartphone time
Local time will automatically be adjusted whenever the watch is connected with a smartphone.

Super Illuminator
At the touch of a button, the display can be brightly illuminated in a fashionable color

Shock-resistant
Shock-resistant construction protects against impact and vibration.

Solar Power
A solar cell provides power for operation.

Neo-display
A luminous coating provides long-term illumination in the dark after only a short exposure to light.

World time function
Displays the current time in major cities and specific areas around the world.
Stopwatch function - 1/100 sec. - 24 hours
Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 24 hours.

Timer - 1/1 sec. - 1 hour
For fans of precision: the countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. The time can be set to the nearest second and up to 1 hour in advance - Ideal for people who need to take medicines every day or those who do interval training.

5 daily alarms
The daily alarm reminds you about recurring events with an acoustic signal at the time you have set. This model has 5 independent alarms for flexible reminders of important appointments.

Hand Moving Function
With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date.

Phone Finder
Misplaced your smartphone? All it takes is the push of a button on your watch and the smartphone sounds an alarm.

Multi-language
The name of the day can be displayed in different languages.

Button tones on/off
The button tones for using the mode button can be turned off. This means that the watch no longer beeps when switching from one function to another. Preset alarm or countdown timers remain active when the button tones are deactivated.

Automatic calendar with Date, Day and Month
Once set, the automatic calendar always displays the correct date.

12/24-hour timekeeping
Times can be displayed in either a 12-hour or 24-hour format.

Mineral glass
The tough mineral glass resists scratching.

Carbon-reinforced Stainless steel case
The combination of stainless steel and carbon fiber reinforced the stability of the watch and provides a better comfort.

Resin band
Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties.

Buckle
The bracelet is equipped with a buckle.

Battery level indicator
An indicator shows the current battery level.

Water resistance classification (20 bar)
Perfect for free diving without scuba gear: the watch is water resistant up to 20 bar according to ISO 22810.