There is no need to repeat yourself when using this model. Not only does it offer 20 watts of output power to keep you from raising your voice but it can also record the lesson onto a flash drive or SD card to be given to students who are absent. It also has the ability to play back audio from a flash drive or SD card and transmit FM radio. It can be clipped on to a belt or waistband or be worn on the provided neck lanyard. It comes with a comfortable microphone that is plugged into the unit.