2100 series Carbon and resin Resin band Mineral glass Shock resistant Carbon core guard structure 200-meter water resistance Approx. Battery life: 3 years on sr726w x 2 31 time zones 1/100-second stopwatch Countdown timer 5 daily alarms Hourly time signal Double LED light Full auto-calendar (to year 2099) Button operation tone on/off Accuracy: ±15 seconds per month 12/24-hour format Dimensions: L 48.5 x W 45.4 x H 11.8 mm Compatible band size: 145-215 mm Style: gskga2100bm-7a2 Color: Skeleton / Blue Material: Carbon / Resin
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