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ANALOG-DIGITAL
GA-100 SERIES

GA100-1A4

My GShock

Quick Operation Guide TWIN SENSOR This new model is the first in the GRAVITYMASTER lineup to be equipped with digital compass capabilities, creating a watch that is perfectly matched to the needs of the modern aviator, both in terms of function and appearance. Pressing the 9 o'clock button in any mode immediately goes to the Digital Compass Mode, and a button at 8 o'clock returns to the mode you were in before the Digital Compass Mode. Continual direction readings can be taken for 20 seconds, during which the second hand points to north, a literal direction indicator is displayed in the upper display, and a direction angle value is displayed in the lower display. Bearing Memory lets you temporarily store and display a direction reading so you can use it as a reference as you take subsequent digital compass readings. Other features include temperature measurement, large numerals, and thick hands for easy reading. A coating on the tip of the second hand and minute markers reacts with the black light illumination of the watch for easy reading in the dark. * The appearance of Neon Illuminator illumination depends the watch model.

GA-100-1A4

Specifications

Case size (L× W× H)
55 × 51.2 × 16.9 mm
Weight
70 g
Case and bezel material
Case / bezel material: Resin
Band
Resin Band
Construction
Shock Resistant
Magnetic Resistant
Water resistance
200-meter water resistance
Power supply and battery life
Approx. battery life: 2 years on CR1220

Glass
Mineral Glass

World time
World time 29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
Stopwatch
1/1000-second stopwatch Measuring capacity: 99:59'59.999'' Measuring modes: Elapsed time, lap time, split time Others: Speed (0 to 1998 units/hour), Distance input (0.0 to 99.9) Mach indicator (speed exceeding 1225 units/hour)
Timer
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) Other: Auto-repeat
Alarm/hourly time signal
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Light
LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Light color
LED:Amber
Calendar
Full auto-calendar (to year 2099)
Accuracy
Accuracy: ±15 seconds per month
Other features
12/24-hour format
Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (speed) Digital: Hour, minute, second, pm, month, date, day

*The color tone of the listed products may differ from the actual product in some cases.

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