Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ipod sport kit for Ipod nano

I'm a semi-avid runner, and was curious about this item, as I always run with music from my nano attached to my waist band. I've found this item to work great, right out of the box. With one exception! If you are an avid treadmill runner, you'll find that the mileage and calories burned calculated by the treadmill doesn't jive with the mileage and distance run according to the Ipod+Nike sport kit. You will however find yourself motivated to run further, and get yourself synced up with Nike's website. Set goals, se how you run, challenge yourself. I personally think the Ipod sensor is more accurate than the treadmill (but don't tell my wife that). I would recommend this kit.