GST-B100 Series - GSTB100D-1A

A G-STEEL model equipped with an analog chronograph and a pure stainless steel band designed with a motif of heavy jet engine blades.
A dual-coil motor in a rotating disc dial placed at 9 o'clock moves the dial blades and exudes a functional beauty. In addition to the alarm on/off function and using the rotation to show the stopwatch, etc., it also functions as a battery indicator,
The layer guard structure and high-density mounting technology have allowed the module to be smaller and thinner, improving wearability and overall watch quality.
It is also equipped with Bluetooth® connectivity that enables accurate time acquisition via your smartphone. Its Tough Solar feature allows it to run stably, and it is also equipped with practical functions such as high-brightness LEDs and dual-dial world time.

Basic Information

• Case size (L× W× H)

  58.1 × 53.8 × 14.1 mm

• Weight

  185 g

• Case and bezel material

  Resin / Stainless steel

• Band

  Solid Band
  Stainless Steel Band
  One-touch 3-fold Clasp

• Construction

  Shock Resistant

• Water resistance

  200-meter water resistance

• Power supply and battery life

  Tough Solar (Solar powered)

Smartphone Link/App Connectivity Features

• Smartphone Link feature

  Mobile link (Wireless linking using Bluetooth®)

• Apps

  CASIO WATCHES

Exterior

• Glass

  Mineral Glass

• Crown

  Screw Lock Crown

• Other

  Neobrite

Watch Features

• World time

  Dual time (Home city time swapping)

• Stopwatch

  1-second stopwatch
  Measuring capacity: 23:59'59
  Measuring mode: split time
  Countdown timer Measuring unit: 1 second
  Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)

• Alarm/hourly time signal

  Daily alarm

• Light

  LED light (Super Illuminator) Afterglow

• Light color

  LED:White

• Calendar

  Full auto-calendar (to year 2099)

• 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) 24 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 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)
  Date display
  Day indicator

Shipping

• Shipping method and cost are calculated at checkout based on the item and your delivery location.
• Orders are typically processed within 1–2 business days; tracking is provided once your order ships.

Returns & Exchanges

• Returns accepted within 30 days of delivery.
• Items must be unworn and in original condition with all packaging and documentation; jewelry tags and watch protective stickers intact, links uncut.
• Return shipping is the customer’s responsibility. A restocking fee may apply on certain product types.
• Engraved, custom, and special-order pieces are final sale.
• To start a return or exchange, contact your nearest Monica Jewelers location.