GM-2100B-4A

Basic information Case size (length × width × height): 49.3 × 44.4 × 11.8 mm Weight: 72 g Case and frame material: Resin / Stainless steel Strap: Resin strap Design: Shock resistant Water resistance: Water resistant up to 200 meters Power source and battery life: Approximate battery life: 3 years on SR726W × 2 Watch features World time: World time 31 time zones (48 cities + Coordinated Universal Time), on/off daylight saving time Stopwatch: Stopwatch with accuracy of 1/100 second Measurement capacity: from 00'00''00 to 59'59''99 approximately (for the first 60 minutes) and from 1:00'00 to 23:59'59 approximately (after 60 minutes) Unit of measurement: 1/100 second (for the first 60 minutes), one second (after 60 minutes) Measurement modes: elapsed time, split time, two-place times Timer: Countdown timer Unit of measurement: one second Countdown range: 24 hours Start time setting range: from one second to 24 hours (with increments of one second, one minute, or one hour) Alarm / Hourly chime: 5 daily alarms Hourly chime Light: Dual LED light LED face light (high-intensity lamp, adjustable illumination duration (1.5 seconds or 3 seconds), twilight illumination) Backlight with LED technology for digital display, (high-intensity lamp, adjustable illumination duration (1.5 seconds or 3 seconds), twilight illumination) Light color: White Calendar: Full automatic calendar (until the year 2099) Mute feature: On/off button tone Accuracy: Accuracy: ±15 seconds per month