"Don't do it"1.0 starson by stevieb_xq28
Pros: good sound and comfy fit
Cons: short life span of the product (2-3 weeks with 2 different sets), difficult buttons to control.
Summary: I purchased these 3 months ago and have only used them in the gym 3 times. The headset is difficult to control while wearing (ie - multiple buttons that have multiple functionalities), the iPhone does not support the file system used by the Backbeat headphones for music control, so you must advance tracks manually on the phone. I never used the headphones to switch to a phone call. These issues were fine with me, as I only wanted wireless headphones to use while I worked out. The problem now is that the headphones will not consistently turn on or off and I can not pair them. Several of the features you should be able to perform with the headphones (ie Bass boost on/off) do not respond. I'm assuming I have a defective pair, but googling the net has suggested otherwise. I would not purchase these again and would instead spend my money elsewhere. Altec Lansing's customer service has a horrible reputation and so far, I've had no luck at getting a response from them.
Follow-up. Amazon's customer service was great at replacing these headphones. But once again, after 2 weeks of use the headphones stopped working. They are fully charged and will light up on the charger, but they will not turn on. I emailed Altec Lansing and was told to try a reset - which I did to no avail. This second pair was used for 2 weeks, always indoors, for never more than an hour at a time, and I don't sweat. I loved them when they worked, but I don't recommend them.