1,bluetooth transmitter 2,handheld type or usb headset 3,page turner:page up/down 4,laser pointer,MP3 play 5,LCD diplay mic teaching aids & teaching microphone This model microphone is a bluetooth transmitter,we desined for teachers comfort,who can hang on his neckand do gesture to his classes.or speak by the inbuilt mic or headset mic; It has many many functions which is the perfect for teacher ...