Multi-time: Register 4 different cities and switch between displays and cities. World time: 48 cities around the world (31 time zones, with daylight saving setting function) + UTC (Coordinated Universal Time) display and home city settings. Stopwatch (1/100 second, 24 hour counter, split included) Timer (set units: 1 second, maximum set: 24 hours, 1/10 second increments) 5 time alarms (one-time alarm/daily alarm switching function), time signal. Fully automatic calendar. Switch between 12 and 24 hour displays. ● Switching sound sound on and off. LED light (afterglow function, afterglow time switching (1.5 seconds/3 seconds) included)