Instruct: Classify Amazon reviews into positive or negative sentiment
Query: garmin 301

find the product very useful overall. the trail feature is a little difficult to follow as it does not use a map. i have trouble setting the heart rate limit beep. the gps is typical in terms of making contact with the signal (often several minutes) but it maintains a signal pretty well. i would buy the product again. check the software before you buy if that is a major reason for the purchase, as it is really limited in my view.