I'm fairly new to the world of bluetooth devices and never has it been so difficult to find exactly what I want. After endlessly dealing with conventional earbuds dying on me, I was seeking to find something that was just as comfortable (for me) with the additional feature of being (slightly) wireless.The Pros: it is wireless, I found recently that I can connect several devices at the same time (my phone and iPod as long as they both don't try to use the audio at the same time), and it's small and convenient. The Cons: (and not all Panasonics fault) cannot control my iPod, the cable lengths are different as to cause you to wrap the left bud around your head (I don't want to wrap it around my head, I want wear it like I use to wear any other earbuds), battery life only 8 hours (matches most of the devices I'm using them for, but sucks when you're walking home at the end of the day and the thing is dying with beeps and pauses), and the pluggin is a microjack that you can't plug into any device (again mostly at the end of the day when the transmitter is dead) which sadly makes me carry a backup pair of the very earbuds they were to replace.I don't make earbuds, but I know what I like. I like the conventional earbuds, and wish that some one would just make that design into a wireless device that has a decent battery life, or is more capable with other chargers so I can have a separate phone charger at work (without having to buy a specific charger just for this device). The iPod stock earbuds are close (except not being bluetooth) cause I want to control both a phone and audio device. I get hours of enjoyment and that is good, but these are not great.