Key Features & Specifications of Casio G-Shock GM-B2100GD-9A Men’s Watch  

Key Features:

• Shock Resistant: Tough construction for durability
• 20 Bar Water Resistance: Can withstand up to 200 meters of water pressure, suitable for professional diving
• Keeps Yourself in Time: Bluetooth connectivity for automatic time adjustment
• Stable Solar Power: Tough Solar technology ensures long-lasting power
• Beautiful Polished Metal: Gold ion-plated stainless steel case and band for a premium look
• Smartphone Link: Connects via Bluetooth® for easy time adjustment, world time settings, reminders, and phone finder
• Double LED Light (Super Illuminator): Ensures clear visibility in low-light conditions
• Multi-Function Stopwatch & Timer: Ideal for sports and precision timing
• Power Saving Feature: Automatically turns off the display in darkness to save energy
• Battery Level Indicator & Long Battery Life: Runs up to 7 months on a full charge, 18 months in power-saving mode

Specifications:

Basic Information:

• Case & Bezel Material: Stainless steel
• Band: Stainless steel band (Solid Band, One-touch 3-fold Clasp)
• Construction: Shock resistant
• Water Resistance: 200-meter water resistance
• Time Adjustment: Bluetooth connectivity for automatic time updates
• Power Supply & Battery Life: Tough Solar (Solar powered)
• Smartphone Link / App Connectivity Features
• Mobile Link: Wireless linking using Bluetooth®
• App: CASIO WATCHES

App Functions:

• Auto time adjustment
• Easy watch setting
• Approximately 300 world time cities
• Time & place logging
• Reminder notifications
• Phone finder

Exterior & Build:

• Glass: Mineral glass
• Back Plate: Screw lock back
• Surface Treatment: Gold ion-plated case & band
• Compatible Band Size: 150 to 205 mm
• Other: Neobrite for improved readability

World Time:

• 38 time zones (38 cities + UTC)
• Daylight saving on/off, auto DST switching
• Home city/World time city swapping

Stopwatch:

• 1/100-second precision
• Measuring capacity:
• 00'00''00~59'59''99 (for the first 60 minutes)
• 1:00'00~23:59'59 (after 60 minutes)
• Measuring modes: Elapsed time, lap/split time

Countdown Timer:

• Measuring unit: 1 second
• Countdown range: 60 minutes
• Adjustable in 1-second and 1-minute increments

Alarms & Hourly Signal:

• 5 daily alarms
• Hourly time signal

Lighting:

• Double LED Light (Super Illuminator)
• LED light for the face (Selectable illumination duration: 1.5 or 3 seconds, afterglow)
• LED backlight for the digital display
• Light Color: White
• Calendar: Full auto-calendar (to year 2099)
• Mute Feature: Button operation tone on/off
• Energy Saving: Display turns off when left in darkness to save power
• Battery Display & Alerts: Battery level indicator

Run Time:

• 7 months on a full charge (normal use)
• 18 months in total darkness with power-saving mode on
• Accuracy: ±15 seconds per month (without mobile link)

Other Functions:

• Hand Shift Feature: Moves hands out of the way for a clear digital display view
• 12/24-Hour Format
• Date/Month Display Swapping
• Day Display: Available in six languages

Regular Timekeeping:

• Analog: 2 hands (hour, minute – hand moves every 20 seconds), 1 dial (battery level, mode)
• Digital: Hour, minute, second, PM, month, date, day

Dimensions:

• Case Size (L×W×H): 49.8 × 44.4 × 12.8 mm

Watch Size Chart