Casio G-SHOCK – G-Steel GST-B1000 Series Bluetooth Tough Solar 44mm GSTB1000D-1A

Description

Tough, innovative, functional beauty — reimagined in sharp, minimalist style.

The GSTB1000D carries on the G-SHOCK heritage of tough construction and design rooted in functional beauty, reconstructing this legacy to achieve a polished, sleek expression.

The bezel goes logo-free for a clean, modern look, while three separate finishes — vertical hairline, circular hairline, and mirror polishing — create a rich and sophisticated textural appeal that changes as light is reflected at different angles. The mirror- and hairline-finished solid stainless-steel band is paired with a tri-fold clasp also crafted from solid stainless steel. This sharp, flat design takes you from business meetings to casual settings to outdoor activities with ease.

We’ve incorporated details from the DW5000C, the very first G-SHOCK, adding sporty touches like the original’s signature bezel shape and brick pattern. The GSTB1000D-1A features accent colors inspired by the first G-SHOCK: red symbolizing the passion to take on challenges, blue representing water resistance, and yellow signifying outstanding shock resistance.

This is a timepiece built to be tough. A metal bezel guards against impact, while the carbon-reinforced resin case protects the module. Urethane buffering components where the metal band meets the case absorb shock and reduce stress on the joints — enhancing durability and ensuring a more secure connection. Adhesive glass bonding and a compact module design make for a slimmer, lighter watch, without compromising shock resistance. All of this comes together in an exacting combination of comfort, toughness, and everyday usability.

Compact form, minimalist design, and rugged performance — this timepiece is an all-around companion, ready for whatever comes your way.

Basic Information

Case Size (L x W x H): 46.9 x 44.2 x 11.6

Weight: 118 g

Case and Bezel Material: Bio-based carbon/stainless steel

Band:

• • Solid stainless steel band
  • One-touch 3-fold clasp

Construction:

• • Shock Resistant
  • Carbon Core Guard structure

Water Resistance: 200-meter water resistance

Time Adjustment: Bluetooth: Connects to a smartphone and automatically adjusts the time

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

App Connectivity feature:

• • Auto time adjustment
  • Easy watch setting
  • Time & place
  • Phone finder

Exterior

Glass: Mineral Glass

Crown: Screw Lock Crown

Compatible Band Size: 150 to 205 mm

Other: Neobrite

Watch Features

Stopwatch:

• • 1-second stopwatch
  • Measuring capacity: 29’59 (30 minutes)
  • Measuring mode: Elapsed time

Timer:

• • Countdown timer
  • Measuring unit: 1 second
  • Countdown range: 30 minutes
  • Countdown start time setting range: 1 minute to 3 minutes (1-minute 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: Low battery alert

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 store in total darkness with the power save function on after full charge)

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), 2 dials (24-hour, day)
  • Day indicator
  • Date display