Casio G-Shock MTG-B1000BD-1A MT-G Smartphone Bluetooth Watch

The G-SHOCK MT-G combines metal and resin into forms of essential functional elegance, and also provides TRIPLE G RESIST durability.
Connected Engine supports time correction using a time calibration signal and Bluetooth connection. MULTIBAND 6 automatically adjusts time settings based on reception of one of six time calibration signals around the globe for automatic time adjustment when you are within the range of a signal, even if the connection with a smartphone is not possible for some reason.

Neobrite
Spherical, Sapphire Glass with non-reflective coating
Screw Lock Crown
Black IP
TRIPLE G RESIST (Shock resistant, Centrifugal force resistant, Vibration resistant)
Black ion plated case
Black ion plated band
200-meter water resistance
LED light (Super Illuminator)
Afterglow
Solar powered
Time Calibration Signals
Mobile link (Wireless linking using Bluetooth)
The auto hand home position correction
World time: 39 time zones
1-second stopwatch
Countdown timer
Daily alarm
Battery level indicator
Power Saving (hands stop to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
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)
Size of case : 55.8×51.7×14.4mm
Total weight : 182g