Pros: The sound quality on these is fantastic, I can use them in the kitchen and continue to hear over blenders, mixers, etc... even without having to max out the volume on the headset to blast myself away. Haven't yet tried mowing the yard with them, but I'm very confident they'll come through loud and clear. Also, I love the multipurpose FM radio option - that also comes through loud and clear. I love that there is an actual pre-recorded voice that'll walk you through setup and tell you what each beep means rather than having to interpret a series of bleeps and blips. It's very comfortable to wear and aside from minor tugs (see other comments) doesn't feel like it'll fall out at all.

Cons: Unfortunately, the Bluetooth signal is really temperamental. These were definitely built for use in the gym... with your phone on an arm band... on your right arm... with line of sight from phone to headset (right side). I usually keep my phone in my left shirt pocket (because that's where they put shirt pockets), and typically every 10 seconds the sound just stops for 1 second... this morning, I tried leaving my phone on my desk while listening to podcasts. It worked great until I'd take a drink of coffee... whenever I raised my arm and broke the line of sight between phone and headset, the sound would stop. I connected these to my MacBook and it went nuts... had to delete all Bluetooth profiles and reset.

Overall Review: If you are planning to wear this with a collared shirt or sports coat, the cord that connects the headphones behind your neck often gets stuck between collar and neck and can tug a little when you turn your head... but you really shouldn't be moving while using these anyway, lest you lose signal. I suspect that with an armband phone holder (on your right arm... just like all the product pictures), this would work like a dream... still expect it to work well for lawn care and at the least as a fantastic sounding FM headset. Another possible disclaimer, I've a decent phone (HTC Desire - Cyanogen7) but also a toddler who likes to play with the phone... the phone works fine on other BT connections, but if you're looking for a reason to discredit my review and buy anyway, there you go. :)