Accuracy
Accuracy: ±15 seconds per month
Alarm hourly time signal
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Calendar
Full auto-calendar (to year 2099)
Case and bezel material
Resin
Case size l w h
55 × 51.2 × 16.9?mm
Compatible band size
145 to 215 mm
Construction
Shock Resistant; Magnetic Resistant
Light
LED light
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
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
Power supply and battery life
Approx. 2?years on CR1220 battery
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
Water resistance
200-meter water resistance
Weight
GA?100 : 70?g (some color variants ~72?g)
World time
World time
29 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping
