These worked reasonably well for a while... I actually used them non-stop (except to charge) for 5 days after I got them. This is my first pair of bluetooth earbuds and I was impressed at the battery life. They easily lasted 8+ hours, and charged quickly. After the initial 5 day spurt of use I would only use them intermittently afterwards, and they continued to work fine and held a charge when not in use well as long as they were powered off obviously. The downsides to these... the volume was not all that loud. Sometimes I was using them in louder environments (at a race track, on a plane) and I pretty much had to have my computer or phone at max volume to hear them easily. I was not listening to music most of the time, typically talk radio or shows so this could have contributed to why I had to have the volume maxed the entire time. Along those same lines, the noise isolation is nonexistent. So that really doesn't help matters when the volume does not go that loud. The real problem came when after 4 months of ownership they just stopped working. They will no longer connect to any device for longer than a second or two before they immediately disconnect. I've contacted Optoma for a warranty replacement so we will see how that goes. So far it has been 3 days and I still have not received my RMA slip. GIven the relatively low amount of use these saw I am very disappointed that they failed so early. But the accessories they come with are excellent, I really liked the pouch as I could keep it clipped to the exterior of my travel bag so the headphones were always in easy reach when I needed them. The pouch could use a little mesh pocket inside to keep the charging cable contained, but that is another minor gripe about the whole setup in general.
Good when they worked - failed after 4 months