Casio G-Shock MTG Dual Core Guard Watch MTGB4000B1A2

Casio G-Shock MTGB4000 features an updated Dual Core Guard structure Triple G Resist structure to withstand shock, centrifugal forces, and vibration. Bluetooth®, Multiband 6, Tough Solar charging system, and high-brightness LED light. 56.6 × 45.3 × 14.4 mm.

Case size (L× W× H)
56.6 × 45.3 × 14.4 mm
Weight
112 g
Case and bezel material
Carbon / Stainless steel
Band
Resin Band
Construction
TRIPLE G RESIST (Shock resistant, Centrifugal force resistant, Vibration resistant)
Carbon Core Guard structure
Water resistance
200-meter water resistance
Time adjustment
Radio-controlled Watch; Multi band 6
Bluetooth: Connects to a smartphone and automatically adjusts the time
Power supply and battery life
Tough Solar (Solar powered)

Smartphone Link feature
Mobile link (Wireless linking using Bluetooth®)
Apps
CASIO WATCHES
App connectivity feature
Auto time adjustment
Easy watch setting
Approximately 300 world time cities
Time & place
Watch status display
Self check
Phone finder

Glass
Sapphire crystal with anti-reflective coating
Crown
Screw Lock Crown
Surface treatment
Blue gray ion plated bezel
Compatible band size
145 to 215 mm
Other
Neobrite

World time
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