Utilizing a unique Self-Charging solar power system, this sporty analog/digital combination model provides plenty of functionality. A host of features such as 48-city world time, 5 alarms, stopwatch and dual countdown timers make this a versatile timepiece for almost any sport outing. Black resin band, solar digital analog watch with a black face. CASIO SOLAR POWERED Specifications: Size: 52.2 × 48.3 × 13.7 mmCase / bezel material: ResinResin BandNeobriteResin Glass100-meter water resistanceLED light (LCD part only)Selectable illumination duration (1.5 seconds or 3 seconds), afterglowSolar-poweredWorld time31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping1/100-second stopwatchMeasuring capacity: 59'59.99''Measuring modes: Elapsed time, split time2 countdown timersCan be used during interval training that alternates between two different paces.Measuring unit: 1 secondInput 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 timekeepingAnalog: 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)Warranty: 2 Year International Manufacturer's Warranty