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.
- Price — 150$ *average Amazon Price, we may earn commission from purchases
- Year of first Release — 2011
- Module Number — 3255 / Manual
- Model Range — PROFESSIONAL (G-Shock Professional Line includes watches that can really help you survive under hard, tough conditions. They are well equipped and have the best tough specs.)
Feedback from users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.
PROs
+ sturdy, firm
+ bright illumination
+ large digits
+ time visible in all modes
+ powerful backlight
+ accurate altometer
CONs
– large for some
– no data recall
– no auto EL
– no power save
– not accurate temperature sensors
GDF-100 Model Range *may be updated
GDF-100-1A GDF-100GB-1J GDF-100BTN-1 GDF-100-1B GDF-100-4
The most distinctive specs of GDF-100 *Editorial
— Front-Facing Twin Sensor Design (Altimeter/Barometer & Thermometer)
— Super Illuminator (high-brightness LED backlight with auto light switch)
— Thermometer (can measure and display the outside temperature in a range from -10 C to 60 C)
— Barometer (measures the air pressures and displays tendencies in the weather)
— Altimeter (The electronic mechanism “estimates” the altitude based on the air pressure)
Official GDF-100 Specs / Features *for base version GDF-100-1B
- 12/24-hour format
- Accuracy: ±15 seconds per monthAltimeter
- Measuring range: -700 to 10,000m (-2,300 to 32,800 ft.) without reference altitude
- Measuring unit: 5m (20 ft.)
- Others: Reference altitude setting
- *Changeover between meters(m) and feet(ft.)
- Approx. battery life
- 5 years on CR2025
- Full auto-calendar (to year 2099)
- 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
- Button operation tone on/off
- Countdown timer
- Measuring unit: 1 second
- Countdown range: 24 hours
- Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
- Daily alarms
- 5 independent daily alarms
- Hourly time signal
- LED Backlight (Super Illuminator)
- Selectable illumination duration, afterglow
- Regular timekeeping
- Hour, minute, second, pm, month, date, day
- Shock resistant (G-SHOCK)
- 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
- Size of case / total weight
Recent News about GDF-100
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