Review on LonFine Air Open Ear Wireless Bone Conduction Headphones, Sweat Resistant Bluetooth Headsets with Built-in Microphones for Running, Cycling, Hiking, and Outdoor Calls – Lightweight, Painless Wearing by Reza Cook

I really enjoyed this first introduction to bone conduction headphones. I used them every day during exercise and other activities for about a week - and then they died. I think they just couldn't take the sweat even though they should be protected from sweat. I sent them back and bought a more expensive brand hoping the new ones would last. As a sound comparison, I'd say these Lonfines didn't sound as good as the Aeropex brand I ended up with either - I had to turn up the volume on my MP3 player to hear the Lonfines. But if you don't sweat a lot, this is a decent product.