GST-B1000D-1A

Casio G-Shock - GST-B1000D-1A

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

The GST-B1000D 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 DW-5000C, the very first G-SHOCK, adding sporty touches like the original’s signature bezel shape and brick pattern. The GST-B1000D-1AJF 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.

Specifications

• Case and bezel material : Bio-based Carbon / Stainless steel
• Solid stainless steel band
• One-touch 3-fold Clasp
• Mineral Glass
• Neobrite
• Shock Resistant
  Carbon Core Guard structure
• Screw Lock Crown
• 200-meter water resistance
• Tough Solar (Solar powered)
• LED light : White (Super Illuminator) Afterglow
• Mobile link (Wireless linking using Bluetooth®)
• Apps : CASIO WATCHES
• App connectivity feature
  Auto time adjustment
  Easy watch setting
  Time & place
  Phone finder
• Time adjustment
  Bluetooth: Connects to a smartphone and automatically adjusts the time
  
• Stopwatch
  1-second stopwatch Measuring capacity: 29'59 (30 minutes) Measuring mode: Elapsed time
• Countdown timer
  Measuring unit: 1 second Countdown range : 30 minutes Countdown start time setting range : 1 minute to 30 minutes (1-minute increments)
  
• Daily alarm
  
• Low battery alert
• Power Saving (hands stop to save power when the watch is left in the dark)
• Full auto-calendar (to year 2099)
• Date display
  
• Regular timekeeping:
  Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 2 dials (24-hour, day)
  Day indicator
  Date display
  
• Accuracy: ±15 seconds per month (with no 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 : 46.9 × 44.2 × 11.6 mm
• Total weight : 118 g
• Compatible band size : 150 to 205 mm