Shock resistant
200m water resistant
Solar powered
Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
Step count using a 3-axis acceleration sensor: 0 to 999,999 step count display range
Step Count History Display: Daily data (8 days), weekly data (4 weeks), number of days step count goal was reached
Step Goal Progress Display (GOAL mark; step count goal setting range: 1,000 to 50,000, 1,000-step increments)
Step Reminder: audible alert lets you know when you have not walked enough within a specific period (Can be enabled or disabled)
Step Count Graph: Hourly step count for the past 5 hours on a 6-level graph
Step indicator
Power Saving: Auto sensor sleep state entry after fixed period of non-activity)
Dual time (Home time swapping)
1/100-second stopwatch
Measuring unit: 1/1000 second (for the first 60 minutes): 1 second (after 60 minutes)
Measuring modes: Elapsed time, split time
Countdown Timer
Measuring unit: 1/10 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
Accuracy ±15 seconds per month
Dual time (Home city time swapping)
1-second stopwatch:Measuring capacity: 23:59'59,Measuring mode: split time
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 alarm
Battery level indicator
Power Saving (hands stop to save power when the watch is left in the dark)
Full auto-calendar (to year 2099)
Date display
Day indicator
Regular timekeeping: Analog: 3 hands (Hour, minute (hand moves every 10 seconds),Digital: Hour, minute, second, pm, month, date, day
Shock resistant (G-SHOCK)
Storage Battery: Solar Rechargeable Battery
Battery Level Indicator
Approx. battery life: 2 years on CR2016
Module 5540
Size of case / total weight GMAS130 49.0 X 45.9 X 15.5mm / 53g