MTG-B4000-1AER

Discover the perfect fusion of cutting-edge design and structural strength with the MT-G series, which combines the solidity of metal with the iconic resin of the first G-SHOCK watches.

The MTG-B4000-1AER features the new Dual Core Guard structure, developed with the support of artificial intelligence, and an innovative frame design that combines carbon fibre and stainless steel. The result is a piece that redefines the balance between durability and aesthetics.

The collaboration between human creativity and AI analysis has made it possible to optimise every detail: from the 3D prototype to the final finishes, achieving a unique shape that organically combines functionality and beauty. The frame, carved from laminated layers of carbon fibre and glass, features a visually striking pattern, while the stainless steel bezel boasts polished and brushed finishes for a sophisticated look.

This watch is ready for anything thanks to its Triple G Resist structure, which withstands shocks, centrifugal forces and vibrations. Its case back, manufactured using metal injection moulding (MIM), further reinforces protection. The highly transparent sapphire crystal and dial, crafted with Yamagata Casio's technological precision, reflect the meticulous attention to detail.

In terms of functionality, it features Bluetooth® connectivity with the CASIO WATCHES app, Tough Solar solar charging system, Multiband 6 technology for automatic time adjustment and high-brightness LED light. Ready to accompany you on any adventure, always with maximum performance.

Key features:

Dual Core Guard structure with carbon fibre and stainless steel

Triple G Resist

Bluetooth® connection and compatibility with the CASIO WATCHES app

Multiband 6 and Tough Solar

High-intensity LED light

Scratch-resistant sapphire crystal

Watch Features

World time 

38 time zones (27 cities + coordinated universal time), Home city time swapping, auto summer time (DST) switching

* Subject to updates by connection between the watch and a phone.

Stopwatch

1-second stopwatch

Measuring capacity: 23:59'59

Timer

Countdown timer

Measuring unit: 1 second

Countdown range: 24 hours

Countdown start time setting range: 1 minute to 24 hours (1-second increments)

Alarm/hourly time signal

Daily alarm

Light

LED light (Super Illuminator)

Afterglow

Light color

LED:White

Calendar

Full auto-calendar (to year 2099)

Hand home position correction feature

The auto hand home position correction

Energy saving feature

Power Saving (hands stop to save power when the watch is left in the dark)

Battery display/alert

Battery level indicator

Run time

Approx. battery operating time:

5 months on rechargeable battery (operation period with normal use without exposure to light after charge)

18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)

Accuracy

Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)

Other features

Regular timekeeping:

Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)

Day indicator

Date display

Time adjustment details

Time calibration signal reception

Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful)

*5 times a day for the Chinese calibration signal

Manual receive

The latest signal reception results

Time Calibration Signals

Station name: DCF77 (Mainflingen, Germany)

Frequency: 77.5 kHz

Station name: MSF (Anthorn, England)

Frequency: 60.0 kHz

Station name: WWVB (Fort Collins, United States)

Frequency: 60.0 kHz

Station name: JJY (Fukushima, Fukuoka/Saga, Japan)

Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)

Station name: BPC (Shangqiu City, Henan Province, China)

Frequency: 68.5 kHz