Pros This is the first Bluetooth hands-free device I've owned that people haven't complained about not being able to hear me during phone calls. The audio quality for calls is crisp and has none of the "warble" as with other Samsung devices.
Cons The included micro-USB to 3.5mm adapter is a bit long and males the device a little cumbersome.
Summary The HM3700 is a great universal USB solution for smartphones with multimedia applications. No one I've called or talked to while using it as a stand-alone hands-free headset has even asked if I am using a Bluetooth device or complained about not being able to hear me like with other devices I've used. The included stereo ear-buds sound almost as good as my Koss and Sony buds and have conveniently shorter leads and built-in auxiliary microphone. The Bluetooth range is also very good and far exceeds the manufacturer's rating with no dead zones or drop-outs. All things considered, the HM3700 is a great value.
Pros Clear sound, easy handling, no drop-outs, clear stereo ear buds in your ear (no that unit which I don't like because the electronic waves) and no need to connect the ear=buds directly to your phone.
Cons I prefer one ear bud instead of two, need only for phone calls, not music listening, should be an option to choose.
Summary This headset is awesome!, I've lost it 4 months ago in my backyard and after my son found it yesterday and recharged the battery it still works!!, after rain, wind weather and landscaping maintenance, it still functioning normally, even without the ear device in the unit which was broken it works perfect with the wire adapter which is actually the reason that I like from this model. 5 stars!!