gm-b2100sd-1aer g-shock classic watch

Basic information
Case dimensions (H x W x D)
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49.8 × 44.4 × 12.8 mm
Weight
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165 g
Case and bezel material
stainless steel
Strap
Stainless steel strap
Durable strap
One-touch 3-fold closure
Structure
Shock resistant
Waterproof
Waterproof up to 20 bar
Setting the time
Bluetooth: Connects to a smartphone and automatically adjusts the time
Power and battery life
Tough Solar (solar-powered)
Smartphone and app connection function
Smartphone connection function
Mobile Link (wireless connection via Bluetooth®)
App
CASIO WATCHES
App connection function
Automatic clock adjustment
Easy clock setting
International time in about 300 cities
Time and location
Memorandum
Find phone
External
Glass
Mineral glass
Back plate
Back with screw closure
Adjustable strap
From 150 to 205 mm
Various
Neobrite

Watch Features
International Time
International Time
38 time zones (38 cities + Coordinated Universal Time), city name display, daylight saving time on/off, automatic switching to daylight saving time (DST), switching between Home City and World Time City
Stopwatch
Hundredths of a second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Unit of measurement:
1/100th of a second (for the first 60 minutes)
1 second (after 60 minutes)
Measurement modes: elapsed time, split/lap time
Timer
Countdown timer
Unit of measurement: 1 second
Countdown interval: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
Sound reminder / Time signal
5 daily sound reminders
Time signal
Light
Double LED light
LED dial light (Super Illuminator, selectable illumination duration (1.5 seconds or 3 seconds), luminescence)
LED backlight for digital display (Super Illuminator, selectable illumination duration (1.5 seconds or 3 seconds), luminescence)
Light color
LED: white
Calendar
Full automatic calendar (up to the year 2099)
Volume mute
Activation/deactivation of the button press acoustic signal
Energy saving function
Power saving (display turns off to save power when the watch is left in the dark)
Battery status display/warning
Battery level indicator
Race timing
Approximate battery operating time:
7 months with rechargeable battery (operating period for normal use without exposure to light after charging)
18 months with rechargeable battery (operating time when stored in total darkness with the power saving function activated after a full charge)
Precision
Accuracy: ±15 seconds per month (without Mobile Link function)
Other features
Hand movement function (the hands move so as not to block the view of the digital display contents).
Date/Month Display Switching
Day view (selectable days of the week in six languages)
Regular time indication:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)
Digital: hour, minute, second, pm, month, date, day of the month