The only downfall is price. Guess I just wasted $300. the only good part about this product is the strong little carabiner it comes with. Tevas are around 60. I power it back on and return to my device. Not good for long term walking. Water resistance is a nice feature, however I do not need that as I would not connect this to anything getting extremely wet. Was very satisfied with this product. It was also far too expensive ($25) for what it is. now that I cannot wear return it so it?s such a waste of my hard earned money.