Casio G-Shock Metal GM-B2100SD-1AER

Basic Information
Case size: 49.8 × 44.4 × 12.8 mm
Weight: 165 g
Case and bezel material: stainless steel
Strap: adjustable stainless steel (150–205 mm)
Clasp: one-touch 3-fold deployant
Structure: shock resistant
Water resistance: up to 20 bar

Power Supply
System: Tough Solar (solar charging)
Battery life: approx. 7 months normal use, up to 18 months in power-saving mode
Power saving: automatic display turn-off in darkness
Battery indicator: yes

Connectivity and App
Bluetooth®: integrated
Mobile Link: smartphone connection
App: CASIO WATCHES
Smart functions: automatic time adjustment, simplified settings, world time (approx. 300 cities), phone finder, reminders

Exterior
Glass: mineral
Case back: screw-lock
Luminescence: Neobrite
Illumination: Super Illuminator dual LED light
Illumination duration: 1.5 or 3 seconds
LED color: white

Watch Functions

World time:
38 time zones + UTC
city name display
automatic daylight saving time

Stopwatch:
hundredths of a second (first 60 minutes), then seconds
max duration 23:59:59
modes: elapsed time, split/lap

Timer:
countdown up to 60 minutes
settings: 1 second or 1 minute

Alarms and Signals:
5 daily alarms
hourly time signal
button tones on/off

Calendar:
full auto calendar up to 2099

Accuracy:
±15 seconds per month (without Bluetooth)

Other Features:
battery level indicator
hand shift feature
day display in 6 languages
selectable date format

Display
Analog: 2 hands (hour, minute), 1 dial (battery level/mode)
Digital: hour, minute, second, AM/PM, month, day, day of the week