The complicated dial gives the watch its distinctive utilitarian appearance. The watch features a digital display. Always reliable: This watch has a particularly secure safety catch, which helps prevent the strap from opening by mistake. We are also able to offer an exchange to a different product if required, please specify this when returning your product. Watch sizing can only be generally carried out on watches with metal bracelets, steel, titanium, gold, etc. The GST-B400 is a Carbon Core Guard model like the GST-B200 and GST-B300. The full dimensions are 46.6 x 49.6 x 12.9 millimeters. The GST-B400-1A with resin band weighs approximately 80 grams, and the other models with a stainless steel band weigh approximately 160 grams.

And there’s more good news. The movement has an approximate operating time of seven months on the rechargeable battery. And it’s accurate ±15 seconds per month when there’s no mobile link function and it has to work all by itself. When connected with the phone, it uses automatic time adjustment, and it runs spot-on. The movement will also last for 18 months on its rechargeable battery when it’s “hibernating” in total darkness with the power save function on after a full charge. Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 24 hours.Powered by any light source, saving time and money as no battery change required- known as TOUGH SOLAR In terms of design, the number of button guards has been reduced as much as possible, enabling the use of large stainless steel buttons that are slim yet easy to operate. 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. We understand the importance of sizing the length of your watch bracelet or strap to provide the perfect fit. Our simple to use watch sizing guide allows you to measure the size of your wrist from the comfort of your own home.

With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date. Technical amendments and errors excepted. The sizes in figures do not correspond to the original sizes. Measuring Capacity: 24 hours, Measuring Mode: Elapsed time, Measuring Unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) The combination of stainless steel and carbon fiber reinforced resin supports the stability of the watch and provides a better wearing comfort. Casio did a great job in reducing the size of the guards around the stainless steel buttons that are slim yet easy to operate. It makes the GST-B400 look less like an instrument. The top bezel shows no less than five different finishes, and the middle bezel has four different finishes. It sounds like a lot of decoration (and it is), but the result is subtle and brings a richness to a watch that is not only for the rich.

Manual

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

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.The 49.6 mm case of the watch is made of stainless steel. The bezel of the model is made of stainless steel. Casio’s G-STEEL can be wirelessly connected to yoursmartphone via Bluetooth, which enables access to a wide range of useful functions

A high-capacity solar-charging system harnesses the power of any light source for reliable watch operation with minimal impact to the environment. Smartphone Link functions (world time: over 300 cities, automatic time adjustment, easy watch setting, Time & Place; Reminder; Phone Finder); hand shift feature; date/month display swapping; day display (in English, Spanish, French, German, Italian or Russian); full auto-calendar; 12/24-hour format; button operation tone on/off; battery level indicator; 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. 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.

A luminous coating provides long-term illumination in the dark after only a short exposure to light. time zones* (38 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, home city/world time city swapping