CASIO G-SHOCK GDF100

Casio G-Shock Twin Sensor Alarm Digital GDF-100-1A GDF100

Twin Sensor

This totally new design for the G-SHOCK lineup comes packed with altimeter and thermometer functions, plus a powerful collection of other features. The new design has been carefully crafted to incorporate a number of basic elements that should allow it to maintain its popularity for a long time to come.

Function-wise, these models come with Super Illuminator high-intensity LED illumination.

Specification :
Case / bezel material: Resin
Resin Band
200-meter water resistance
Mineral Glass
Shock Resistant
LED Backlight (Super Illuminator)
Selectable illumination duration, afterglow
Altimeter
Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.) without reference altitude
Measuring unit: 5 m (20 ft.)
Other: Reference altitude setting
*Changeover between meters (m) and feet (ft)
Barometer
Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg)
Display unit: 1 hPa (0.05 inHg)
Atmospheric pressure differential pointer
*Changeover between hPa and inHg
Thermometer
Display range: –10 to 60 °C (14 to 140 °F)
Display unit: 0.1 °C (0.2 °F)
*Changeover between Celsius (°C) and Fahrenheit (°F)
World time
31 time zones (48 cities), city code display, daylight saving on/off
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-hour increments and 1-minute increments)
Daily alarms
5 independent daily alarms
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Button operation tone on/off
Regular timekeeping: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month
Approx. battery life: 5 years on CR2025
Size of case/total weight: 55 X 51.5 X 17.2 mm/69.2 g
LED:White

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