Features

From G-SHOCK, the watch brand that is constantly setting new standards for timekeeping toughness, come new rugged style G-STEEL models that feature Carbon Core Guard structures.
This new model adopts tough G-SHOCK styling with a disk indicator at 6 o’clock that shows the current mode and charge level, and a front button that completes the overall rugged look. The disk, a round graphic digital display between 1 and 2 o'clock, and a digital display as 12 o'clock add to both functionality and looks.
The GST-B300S model comes with a resin band.

Specifications                                            

• Case / bezel material: Resin / Stainless steel
• Resin Band
• Mineral Glass
• Neobrite
• Shock Resistant
• Carbon Core Guard structure
• 200-meter water resistance
• 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)
  19 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)

Size / Total weight            

• Size of case : 51×50×15.5mm
• Total weight : 91g