G-Shock GA100B-7ASpecifications Case bezel material: Resin Resin Band Magnetic Resistant Shock Resistant Mineral Glass 200 meter water resistance 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 Stopwatch 1 1000 second stopwatch Measuring capacity: 99: 59'59. 999'' Measuring modes: Elapsed

Alarm Stopwatch:

The dial at 9 o’clock has a multi-functional rotating disk that is cut to resemble the thick blades of a jet engine

battery life: 2 years on CR2016 Size of case: 48

1:00'00~23:59'59 (after 60 minutes)

The slim profile and slick design make it as unobtrusive as it is unmistakable

DurabilityDive-ready 300m water resistance and solid stainless steel construction make the 51-30 Chrono one of the burliest pieces in the line

Like the perfect white t-shirt

This lineup’s colors are based on a summer sea motif

Selectable illumination duration

Hand shift feature (Hands move out of the way to provide an unobstructed view of indial)

#Tide recycled plastic uses ocean-bound waste to create the super-durable case material

progress beeper on/off 3 multi-function alarms (with 1 snooze alarm) Hourly time signal