Tough Solar Power 100M Water Resistant LED Light with Afterglow Neo-brite luminous hands and markers World Time31 times zones (48 cities + UTC), daylight saving on/off, home city/world time swapping Multi-lingual Day of Week display (English, Portuguese, Spanish, French, German, Italian) 5 Daily Alarms Hourly Time Signal 1/100 second digital stopwatchMeasuring capacity: 59'59.99"Measuring modes: Elapsed time, split time 2 Countdown Timers (can be used for interval training that alternates between two different paces)Measuring unit: 1 second Countdown input range: 5 seconds to 99 minutes 55 seconds (5-second increments and 1-minute increments)Other: Auto-repeat Function (Timer-to-timer, 10 repeats) Full Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Button operation tone on/off Accuracy: +/- 30 seconds per month Storage Battery: Solar Rechargeable Battery Battery Power Indicator Power Saving Function