Model: GS-GMAS120SR-7A
Shock resistant 
Magnetic resistant
LED light
Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds),
afterglow
World time
29 time zones (48 cities + coordinated universal time), daylight saving on/off,
Home city/World time city swapping
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)
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
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Full auto-calendar (to year 2099)
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
Accuracy: ±15 seconds per month
Approx. battery life: 3 years on CR1220
Module 5518
Size of case / total weight
GMA-S120SR......49.0 x 45.9 x 15.8 mm / 55 g