G-Shock GA100-1A2Specifications 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

for the high level of dust and mud resistance required when in severe environments

Regular timekeeping

selectable illumination duration (1

Digital: Hour minute second pm month date day

Countdown timer Timer for interval measurement (up to five time settings)

selectable illumination duration (2 seconds or 4 seconds)

Six-hand chronograph with 24hr and second timer subdials

G-STEELCarbon Core Guard structureFrom G-SHOCK

Battery: 3 years on CR1220

battery life: 3 years on SR927W × 2

Multiple gaskets are used on the pipes that guide buttons and shafts which keeps mud out

These watches are equipped with Bluetooth® that lets them connect with a smartphone at the press of a button