The md300m is very easy to use yet full of features with simple menu selection buttons it is designed to be robust and can give you at a glance analysis of sp o2 and pulse rate whether you need a table or instant graph review its portable compact and reliable and would be perfectly suited to a clinical environment hospital use medical first aid departments or serious home use features high resolution large 2 8 tft screen displays sp o2 pr waveform and pulse bar adjustable audible a