Review on PANASONIC Wings Sport Headphones RP-BTS35-K - Ultra-Light Wireless Bluetooth Sport Earbud with 3D Flex Sport Clips, Microphone, Call/Volume Controller, and IPX5 Rated Water-Resistant (Black) by Greg Wilkerson

Unfortunately my second set died just like the first. Both had Bluetooth syncing issues from time to time, and both would momentarily lose connection with my phone (in a pocket or backpack about a foot apart) a few times an hour. But I returned the first pair because they stopped loading - factory reset. fixed a few times but in the end (in both cases) it stopped working. Also, in both cases, they stopped working after about a month of use. Both pairs, but especially the second, appeared to be slightly deformed in the R-Unit's USB charging port - probably from sweat - I've used them for strenuous bike rides, but I don't sweat much - and only on long rides when I'm after one long workouts slow down - most sweat evaporates long before it reaches my ears - so I can only imagine how much worse indoor training would be. Disappointed - are quite cheap - and at the same time the sound quality and comfort were great - annoying that the second pair failed right after the return period had expired. I'm currently trying out a few similar JBLs and crossing my fingers that they don't die the same death.