Notetalker Wireless microphone comprises a microphone/transmitter which can be worn by a speaker, teacher or lecturer with the lapel microphone attachment. This then connects wirelessly with a receiver which can be plugged into your smartphone or tablet using a Conversor adapter cable for powered microphones, or plugged into your laptop. The receiver can be up to 15 metres away from the microphone/transmitter. Battery life of up to 6 hours, and rechargeable using a smartphone charger or powercard. The transmitter can also be plugged in to a laptop, speaker or other audio device.