In this task, you're given a review from Amazon. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral, 4: good, 5: extremely good.
Q: It does track your heart rate, but the measurement seems a bit low (on mine at least). Works okay for telling if your heartrate increases or decreases so if you can match a reading with your target zone you can use it to maintain a target heartrate (though the exact bpm of your target heartrate might not be perfectly correct). It's got a pedometer too which works okay, and the app is kinda cool.
A:
3