Nike + iPod Sport Kit

Pros: great idea, great product for runners.

Cons: the sensor's bettery life is too short, and the bettery can't be neither replaced nor recharged.

Summary: I really liked this product. But I am also very disappointed by the sensor. I own two of this product. The first one worked excellent for 3 months then the sensor's battery run out. So I bought the second one. To save battery this time I turn the sensor off when the first time I am not using it, then it can't be turn on anymore.

I only use it for 1 hour per day. When not running, I am not wearing it at all. The sensor suppose to last for 1000 hours, but 1 hour per day for 3 month (about 100 day)-is only about 100 running hours then the battery died.

The second one shows me the poor quality of switch on the sensor.