Casio G-Shock G-Steel Black Dial Black Resin Strap Watch GBM2100-1A

Metal-clad daring meets sophisticated gleam in a GBM2100 that delivers Smartphone Link via Bluetooth® and Tough Solar charging system, all in a meticulously finished metal design with iconic octagonal bezel. Choose from a basic black dial or metallic vapor deposition in blue or green, each complemented by a band made of environmentally responsible bio-based resin. Welcome to a whole new level of metal-clad 2100 functionality — tough construction and stylish design in a timepiece that takes you from casual settings to business meetings without a thought.

Basic Information 

• Case size (L× W× H) 49.3 × 44.4 × 11.9 mm
• Weight 72 g
• Case and bezel material Resin (Bio-based) / Stainless steel
• Band Bio-based resin band
• Construction Shock Resistant,
• Water resistance 200-meter water resistance
• Power supply and battery life: Tough Solar (Solar powered)

 SmartPhone Link/App Connectivity Feature

• Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®

• Apps: Casio Watches
• App Connectivity Feature:
• Auto time adjustment
• Easy watch setting
• Approximately 300 world time cities
• Time & place
• Reminder
• Phone finder

Exterior

• Glass: Mineral Glass

• Compatible band size:145 to 215 mm

• other: Neobrite

Watch Features

• World time 
• 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping

 Stopwatch

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

 Timer

• Countdown timer
• Measuring unit: 1 second
• Countdown range: 60 minutes
• Countdown start time setting range: 1 second to 60 minutes (1-second increments)

 Alarm/hourly time signal

• 4 daily alarms with snooze
• Smart alarm (with snooze)

 Light

• LED backlight (Super Illuminator)
• Full auto LED light, selectable illumination duration (1.5 seconds or 5 seconds), afterglow

 Light color

• LED: White 

 Calendar

• Full auto-calendar (to year 2099)

Mute feature

• Button operation tone on/off

Energy saving feature

• Power Saving (display goes blank to save power when the watch is left in the dark)

Battery display/alert

• Battery level indicator

Run time

• Approx. battery operating time:
• 7 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)

 Accuracy

• Accuracy: ±15 seconds per month (with no GPS signal reception and mobile link function)

 Other features

• Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
• 12/24-hour format
• Date/month display swapping: Day display (days of the week selectable in six languages)
• Regular timekeeping:
• Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)
• Hour, minute, second, am/pm, month, date, day