G-Shock Men GSTB300-1A

A model that adds a rugged design to a G-STEEL model that uses the carbon core guard structure from G-SHOCK, which continues to evolve in the pursuit of toughness.
A model covered with a rugged and playful design typical of G-SHOCK, with a disc dial that shows the current function mode and remaining charge at the 6 o'clock position, and ruggedly designed front button.
Additionally, the round digital graphic at the 1 to 2 o'clock position, which is asymmetrical with the disc dial, achieves both functionality and design, together with the digital LCD at the 12 o'clock position. A model that uses a ruggedly designed resin band in pursuit of functional beauty.

SPECIFICATIONS
Shock Resistant
Carbon Core Guard structure
Mineral Glass
Neobrite
200-meter water resistance
Case / bezel material: Carbon / Stainless steel
Resin Band
Double LED light
LED light for the face (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Tough Solar (Solar powered)
Mobile link (Wireless linking using Bluetooth®)
World time
39 time zones* (39 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping
*May be updated when connected to a smartphone.
1/1000-second stopwatch
Measuring capacity:
00'00''000~59'59''999 (for the first 60 minutes)
1:00'00''0~23:59'59''9 (after 60 minutes)
Measuring unit:
1/1000 second (for the first 60 minutes)
1/10 second (after 60 minutes)
Measuring modes: Elapsed time, split time
Countdown timer
Measuring unit: 1/10 second
Countdown range: 24 hours
Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
5 multi-function alarms (with daily, 1 time, schedule)
Hourly time signal
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Battery level indicator
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Power Saving (display goes blank and hands stop to save power when the watch is left in the dark)
Regular timekeeping
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second),
Digital: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month (with no mobile link function)
Approx. battery operating time:
6 months on rechargeable battery (operation period with normal use without exposure to light after charge)
20 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
LED:White
Module: 5631
Size of case: 51×50×14.5mm
Total weight: 91g