Power Button to Turn device ON/OFF
REC Button to record heart sounds
Mode Selection Button – To change between Bell, Diaphragm & Lung modes
Right/Up Button to increase volume level.
Left/Down Button to decrease volume.
Home Button to go te Home Screen
Ascultating with the Device
Heart Rate Display
Transferring Recorded Waveforms to Smart phone/Tab.
Replaying recorded Audio using HD Speaker