(1)可以实时显示当前时间。 (2)可以用键盘设定多个预定打铃时间。 (3)学有余力的同学可以增加语音提示的功能 -(1) can be real-time display the current time. (2) can be used to set up multiple scheduled to play the keyboard bell time. (3) school students are able to increase the voice prompts fun