Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Good idea, but poor execution . . .

This little gem was the poor product of a great idea - something small that will hang around the neck - perfect for the gym. It doesn't require some constrictive band on the arm, and it does not require a long wire from the waist that can catch on things. But it was designed and constructed poorly. It locks up often and, as with mine now, it is just impossible to access. I say it's a pity, because when it worked it was great. Battery life was poor, but I prefer that to having to put in new AA batteries all the time. I wish that Samsung had improved this product instead of abandoning it for iPod knock-offs.