可以实现过去，现在，乃至不同时区的切换。可以实现倒计时，时间长短计时和提醒。很适合用在一般事务安排和约会时间等待上。-Can be achieved in the past, present, and even to switch time zones. Countdown can be achieved, time, length of time and reminders. Very suitable for use in the General Service arrangements a