"Does not work with iPhone 4S. Volume is always at MAX."0.5 starson by baculum1
Pros: Fairly comfortable.
Cons: Not usable due to MAX volume always, even when the headset is set to lowest volume, and phone is set to lowest volume.
Only use this headset if 1) you want to become deaf, or 2) you already are deaf.
Summary: Do not buy this if you have an iPhone. I suspect this issue is of little interest to Motorola since being bought by Google.