Shock Resistant
200M Water Resistant
LED
Altimeter
Measuring range: -700 to 10,000m (-2,300 to 32,800ft) without reference altitude
Measuring unit: 5m (20ft)
Others: Reference altitude setting
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
Thermometer
Display range: -10 to 60 C (14 to 140 F)
Display unit: 0.1 C (0.2 F)
World Time
31 times zones (48 cities), city code display, daylight saving on/off
5 Daily Alarms
Hourly Time Signal
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: 1 minute to 24 hours (1 hour increments and 1 minute increments)
Full Auto Calendar (pre-programmed until the year 2099)
12/24 Hour Formats
Button tone operation on/off
Accuracy: +/-15 seconds per month (with no signal calibration)
Battery: CR2025
Approx. battery life: 5 years
Module: 3255
Size of case/total weight
GDF100 55.0 x 51.5 x 17.2mm / 69.2g
Condition : Pre owned - Good Condition 90 %
Fullset Box and Papers
CASIO G-SHOCK GDF-100 TWIN SENSOR ALT - THERMO - BLACK
THANKS TO MR. TENGGO MIKE