Casio G-SHOCK MTG-B3000

Casio MTG-B3000 is a new member of the G-SHOCK family of shock-resistant watches. The MTG-B3000, which boasts an innovative slim module and shock-resistant construction, is an even more streamlined addition to the MT-G line of timepieces, all of which feature a construction that makes the most of the properties of both metal and resin.

Released in March 2022, the MTG-B3000 pairs an innovative slim module and shock-resistant structure to achieve a streamlined shock-resistant watch with case that is more than 2mm slimmer than the previous model (MTG-B1000).

Making full use of high-density mounting technology, Casio has developed the slimmest module yet for a G-SHOCK solar chronograph.

To address the all-new shock-resistant structure required by this new slim module, Casio delivers an even more advanced Dual Core Guard structure.

The newly developed guard structure protects the module with a carbon-reinforced resin case and encloses the exterior with metal components, retaining the metal look and texture while reducing the weight, and further protecting the module with a case back featuring raised sides.

Repeated processes of pressing, cutting, and polishing are applied to craft a stainless steel case back that protrudes upward in a 3D form. The raised sides protect the crown and buttons and serve as the lugs to secure the band. All of these innovative designs and technologies result in a metal timepiece with a mere 12.1mm case that is extremely comfortable to wear.

When it comes to function, the MTG-B3000 features radio-controlled calibration and Smartphone Link connectivity via Bluetooth®.

The watch connects with the dedicated CASIO WATCHES smartphone app to automatically adjust to the correct time. It also comes equipped with a solar charging system and high-brightness LED light for practicality and convenience.

Technical details


MTG-B3000B-1AER: Gray color model with soft urethane strap
MTG-B3000BD-1AER: Red color model with layered composite strap
MTG-B3000BD-1A2ER Green color model with layered composite strap

Size of case: 51.9 × 50.9 × 12.1 mm
Construction: Triple G Resist (shock-resistant, centrifugal force-resistant, vibration-resistant)
Water Resistance: 20 bar
Innovative slim module: New shock-resistant structure featuring case back with raised sides

Radio Frequency
77.5 kHz (DCF77: Germany); 60 kHz (MSF: UK); 60 kHz (WWVB: USA); 40 kHz (JJY: Fukushima, Japan) / 60 kHz (JJY: Kyushu, Japan); 68.5 kHz (BPC: China)
Radio Wave Reception: Automatic reception up to six times a day (except for use in China: up to five times a day); manual reception

Communication Specifications
Communication Standard: Bluetooth® low energy
Signal Range: Up to 2m (may differ depending on surrounding conditions)

1 second; measuring capacity: 23:59’59”; measuring modes: elapsed time, split time, 1st and 2nd place times

Countdown Timer
Measuring unit: 1 second (maximum 24 hours)

Other Functions
Smartphone Link functions (Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Phone finder, Watch status display, Self check); auto hand home position correction; daily alarm; dual time (27 time zones, home time swapping, auto summer time [DST] switching); power saving; battery level indicator; full auto-calendar; LED light (super illuminator and afterglow); day and date display

Power Source
Tough Solar power system (solar-charging system)

Continuous Operation
About 18 months with the power-saving function ON after full charge

Total Weight
MTG-B3000B-1AER: Approx. 111g
MTG-B3000BD-1AER/MTG-B3000BD-1A2ER: Approx. 148g