Review on Plantronics 211856-99 Backbeat Fit 3100: Sweatproof and Waterproof True Wireless Earbuds for Active Workouts in Grey by George Saunier

I listen to audio books a lot. With headphones, the high frequencies in my voice often bother me and can even damage my ears. Since they don't pack like in-ears, the high frequencies of audio books don't bother them and are at a very pleasant level. Also, when I'm running, some of the headphones either cover my ears too well and I can hear my heartbeat, or fall out after five steps. Again, I love that their fit allows me to listen to music and not feel completely isolated from my surroundings, and the ear clips are lightweight and flexible. Great for Exercising/Walking/Hiking/Activity. The signal between the headphones is fine. Pairing issues between the headphones do crop up from time to time, but after a minute or so, they rarely appear. I think keeping the phone close or relatively stable helps with signal stability. Would I buy them again, yes. I don't want them to be my only headphones. I have a great pair of Sony noise canceling in-ear headphones for sitting on the plane or traveling. Hope that helps.