AQS810WC-4A

Case / bezel material: ResinResin BandResin GlassNeobrite100-meter water resistanceLED light (LCD part only) Selectable illumination duration (1.5 seconds or 3 seconds), afterglowSolar poweredWorld time 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring modes: Elapsed time, split time2 countdown timers Can be used during interval training that alternates between two different paces. Measuring unit: 1 second Input range: 00'05" to 99'55" (1-minute increments and 5-second increments) Other: Number of repeats settable from 1 to 105 daily alarmsHourly time signalBattery power indicatorPower Saving (display goes blank to save power when the watch is left in the dark)Full auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeeping Analog: 2 hands (hour, minute (hand move every 20 seconds)) Digital: Hour, minute, second, pm, month, day, 6-language day of the week indicator (English, Portuguese, Spanish, French, German, Italian)Accuracy: ±30 seconds per monthApprox. battery operating time: 10 months on rechargeable battery (operation period with normal use without exposure to light after charge) 23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)