G-Shock GA100GBX-1A9 Digital Watches battery life: 2 years on

battery life: 2 years on CR2016

Time calibration signal reception

Accuracy: +/- 30 seconds per month

Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal

31 time zones (48 cities + coordinated universal time)

G-Shock GA100GBX-1A9 Digital Watches battery life: 2 years onSpecifications 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