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)