Casio G-Shock GMA-S140M-4ADR

Product Overview

From G-SHOCK, the brand in an endless pursuit of strength, comes a downsized evolution of the popular GA-140. This model retains the iconic, retro mechanical face design of its predecessor but offers a more compact size that fits comfortably on any wrist.

Featuring edgy metal parts for the indices and dial, this timepiece boasts an improved texture and a sophisticated finish. Whether you are navigating the city or gearing up for winter fashion, this "S-Series" G-SHOCK offers a fashionable, high-performance look that doesn't compromise on the legendary toughness of the brand.

Major Features

• Compact "S-Series" Fit: A downsized 45.9mm case width that provides the same bold G-SHOCK look in a more versatile, lightweight size.
• Retro-Mechanical Styling: The dial design is inspired by 90s stereo components and industrial machinery for a unique, vintage tech aesthetic.
• Magnetic Resistance: ISO 764-compliant magnetic resistance ensures the internal analog-digital module remains accurate around electronic devices.
• 1/1000-Second Stopwatch: High-precision timing that includes a Mach Indicator for measuring speeds exceeding 1225 units/hour.
• Auto LED Light: The amber LED light features an auto-switch that illuminates the dial with a simple tilt of the wrist.
• 20-Bar Water Resistance: Built to handle everything from daily splashes to professional water sports and snorkeling.

Technical Specifications

Basic Information

• Case Size (L× W× H): 49 × 45.9 × 15.8 mm
• Weight: 56 g (Ultra-light for all-day comfort)
• Material: Durable Resin case, bezel, and band
• Construction: Shock Resistant; Magnetic Resistant
• Glass: Scratch-resistant Mineral Glass
• Battery Life: Approximately 2 years on CR1220

Watch Features

• World Time: 29 time zones (48 cities + UTC) with home city/world time swapping.
• Advanced Stopwatch: 1/1000-second precision. Includes elapsed time, lap time, and split time.
  • Speed Calculations: Input distance (0.0 to 99.9) to calculate speed (up to 1998 units/hour).
• Countdown Timer: 24-hour range with auto-repeat and 1-minute/1-hour increments.
• Alarms: 5 daily alarms (including 1 snooze alarm) and hourly time signal.
• Calendar: Full auto-calendar (pre-programmed to the year 2099).
• Accuracy: ±15 seconds per month.
• Regular Timekeeping: Analog (2 hands) and Digital (Hour, minute, second, pm, month, date, day).

Sophisticated Engineering and Style

The Downsized Advantage

The GMA-S140M is engineered for those who want the technical complexity of the GA series in a more streamlined form factor. At only 56 grams, it offers a lightweight experience without sacrificing the "overbuilt" protection that defines G-SHOCK.

Edgy Metallic Detailing

This series elevates the GA-140's design by using metallic finishes on the indices and dial components. This creates a beautiful play of light across the face, giving the watch a more premium, "fashion-forward" feel that transitions perfectly from activewear to winter street style.

Precision Metrics

Equipped with a Mach indicator and speed calculation features, this watch is a tool for performance. The analog dial at the 3 o'clock position serves as a dedicated speed indicator, allowing you to track velocity during laps or timed segments with professional accuracy.