Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good Basic Monitor

I purchased this monitor for my spinning class. My instructor told me I should be sure to get a digital monitor rather than an analog monitor because you will pick up the heart rates of nearby cyclers with an analog. Very good advice. Apparently even the digital can pick up another heart rate if the batteries are low. I didn't give this a 5-star rating only because the instructions are difficult to understand if you are trying to use all of the various functions of the monitor. If you just want to use the straight heart rate monitor, this is a good economical choice.