Casio watch:MASTER OF G - AIR GRAVITYMASTER GR-B100GB-1A

World Time 39 Time Zones* (39 Cities + Coordinated Universal Time), One-Touch UTC Time Zone, Daylight Saving Time On/Off, Automatic Daylight Saving Time (DST) Switching, Home City/World Time City Switching *May be updated when connected to a smartphone.

1/1000 sec Stopwatch Maximum range: 00'00''00~59'59''99 (first 60 minutes) 1:00'00''0~23:59'59''9 (after 60 minutes) Unit of measurement: 1/1000 second (first 60 minutes) 1/10 second (after 60 minutes) Measurement mode: elapsed time, split time

Countdown Timer Measuring unit: 1/10th of a second Countdown Range: 24 hours Countdown start time setting range: 1 second to 24 hours (1 second increment and 1 hour increment) 5 more than that alarm (countdown, daily, 1 time, schedule)

Announces on the hour

Dual LED lighting Surface LED illumination (fully automatic LED illumination, high brightness, selectable illumination duration (1.5 seconds or 3 seconds), dimming of illumination) Digital display LED backlight (fully automatic LED illumination, high brightness, selectable illumination duration (1.5 seconds or 3 seconds), dimming illumination)

LED: White

Full Auto Calendar (to 2099)

Button operation tone on/off

Power saving function (when the watch is in the dark, the display will go black and the hands will stop moving to save power)

Battery level indicator

Approximate battery life: 6 months on rechargeable battery (normal use and no exposure to light after charging) 19 months on rechargeable battery (battery life when stored in complete darkness with power saving on after full charge)

Accuracy: ±15 sec/month (without Mobile Link)

12/24-hour clock

Pointer ducking function (Remove the pointer for unobstructed viewing of the digital display.) ）

General timekeeping: Analog hands: 3 hands (hour, minute (hand moves every 10 seconds), seconds), 1 dial (countdown indicator) Digital: hour, minute, second, afternoon, month, date, day