Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Average Purchase

I bounght the monitor naturally to hear the HB. At 24 weeks I still just hear the sounds of her kicking inside me. Now those are precious, and for the counting that we need to do later in the pregnancy, that may come in handy. However, if you are buying this to hear the HB...I fear the other reviewers are correct...it is a waste of your money!