GM-2100G-1A9DR

Case material / Position of the watch glass: Resin / Steel resistant to corrosion / Resin wall / Water resistance up to 200 meters / Shock resistance / Approximate battery life: 3 years on SR726W × 2 / Mineral glass / Position of the watch glass coated with gold-ion paint / World time / World time, 31 time zones (48 cities + UTC), on/off daylight saving time / Hour stop / Precise hour stop at 1/100 second, measurement capacity: from 00'00''00 to 59'59''99 approximately (for the first 60 minutes) from 1:00'00 to 23:59'59 approximately (after 60 minutes), measurement units: 1/100 second (for the first 60 minutes) and one second (after 60 minutes), measurement modes: elapsed time, split time, two-place times / Timer / Countdown timer, measurement unit: one second, countdown range: 24 hours, countdown start time setting range: from one second to 24 hours (with one-second increase rate, one-minute increase rate, and one-hour increase rate) / Alarm / Hourly chime / Hourly time signal / Light / Dual LED light, LED light for the dial (high-intensity lamp, adjustable lighting duration (1.5 seconds or 3 seconds), twilight lighting) / Backlight using LED technology for the digital display, (high-intensity lamp, adjustable lighting duration (1.5 seconds or 3 seconds), twilight lighting) / Light color / LED: White / Calendar / Full automatic calendar (up to the year 2099) / Mute feature / On/off button tone / Accuracy / Accuracy: ±15 seconds per month / Other features / 12/24-hour format / Hand displacement feature (hands move away from the digital display to see the content clearly) / Regular time recording: analog: two hands (hour hand, minute hand (moves every 20 seconds)), one disc (day), digital: hours, minutes, seconds, evening, month, date / Case size (length × width × height): 49.3 × 44.4 × 11.8 mm / Weight: 72 g