M-21 11210 Black Watch.

G-Shock Watch Specifications

Basic Information

• Case Size (L × W × H): 51.9 × 50.9 × 12.1 mm
• Weight: 111 g
• Case & Bezel Material: Carbon / Stainless Steel
• Band: Resin Band

Build & Durability

• Construction:
  • TRIPLE G RESIST (Shock Resistant, Centrifugal Force Resistant, Vibration Resistant)
  • Carbon Core Guard Structure
• Water Resistance: 200 meters

Time Adjustment

• Radio-Controlled Timekeeping: Multi Band 6

Power Supply & Battery Life

• Power Source: Tough Solar (Solar Powered)
• Battery Life:
  • Approx. 5 months (normal use without exposure to light after charge)
  • Approx. 18 months (in total darkness with power-saving mode on)

Smartphone Link & App Connectivity

• Smartphone Link Feature: Wireless Bluetooth® Connectivity
• App: CASIO WATCHES
• App Features:
  • Auto Time Adjustment
  • Easy Watch Settings
  • World Time (Approx. 300 Cities)
  • Time & Place Logging
  • Watch Status Display
  • Self Check
  • Phone Finder

Exterior

• Glass: Sapphire Crystal with Anti-Reflective Coating
• Crown: Screw Lock Crown
• Surface Treatment:
  • Blue Ion-Plated Bezel
  • Purple Ion-Plated Bezel
• Compatible Band Size: 145 to 215 mm
• Additional Feature: Neobrite (Luminous Coating for Visibility in the Dark)

Watch Features

World Time

• Dual Time: 27 Time Zones
• Features: Home City Time Swapping, Auto Summer Time (DST) Switching

Stopwatch

• 1-Second Stopwatch
  • Measuring Capacity: 23:59'59"
  • Measuring Modes: Elapsed Time, Split Time

Timer

• Countdown Timer
  • Measuring Unit: 1 Second
  • Countdown Range: 24 Hours
  • Start Time Setting: 1 Minute to 24 Hours (1-Second Increments)

Alarms & Time Signals

• Daily Alarm

Lighting

• LED Light (Super Illuminator) with Afterglow
• LED Color: White

Calendar

• Full Auto-Calendar (Up to the Year 2099)

Hand Home Position Correction

• Auto Hand Home Position Correction

Energy-Saving Features

• Power Saving Mode: Hands Stop to Save Power in the Dark

Battery Display & Alerts

• Battery Level Indicator

Accuracy & Timekeeping

• Accuracy: ±15 Seconds per Month (Without Signal Calibration)
• Regular Timekeeping:
  • Analog:
    • 3 Hands (Hour, Minute (Moves Every 5 Seconds), Second)
    • 3 Dials (Dual Time Hour & Minute, Dual Time 24-Hour, Day Indicator)

Time Adjustment Details

• Automatic Time Calibration Signal Reception:
  • Auto Receive Up to 6 Times per Day (5 Times in China)
  • Manual Receive Option Available
• Time Calibration Stations & Frequencies:
  • DCF77 (Germany): 77.5 kHz
  • MSF (England): 60.0 kHz
  • WWVB (USA): 60.0 kHz
  • JJY (Japan): 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)
  • BPC (China): 68.5 kHz

Design Inspiration

• Inspired by Formula Race Car Suspension Arms
• Made with Indigo Blue Carbon Fiber-Reinforced Resin Case
• Blue Ion-Plated Bezel & Band for a Sleek, Stylish Look

Smart Features for Everyday Use

• Auto Time Adjustment for Precision
• World Time Management for Over 300 Cities
• Stopwatch Data Transfer to Smartphone
• Phone Finder Feature (Hold Button to Locate Phone)
• Solar Charging from Sunlight or Artificial Light

This G-Shock model blends durability, cutting-edge technology, and stylish design, making it perfect for extreme conditions and everyday use.