
Update 3-5-20: Manufacturer claims up to nine hours of battery life. Not for me and I'm not sure what that factor is and why I'm clearly declining. BUT - it's still more, much more than meets my requirements. I estimate, and this is a rough estimate, that I have about six hours before I hear the low battery voice alert. So the manufacturers say 2/3. A bit like auto-gallon claims - never that good, but about what you'd expect. Second, I was asked if there are voice alerts when the battery is low and if they are effective. Yes and yes. Today I received it for the first time. I just received them and will update my review if anything changes. So far, so good! I didn't want to buy wireless earbuds for sports at this price point as I was curious. Why? If Apple or anyone else is charging $175-$200, how good can they be? Great so far. The sound is excellent and yes, the bass is noticeable. In general, all percussion instruments sound good. It will be good for my training. I can't compare them to other wireless earbuds as these are my first earbuds, but the sound is much better than Apple's standard wired earbuds. Def will suit my needs. I had trouble pairing the device at first, but after restarting the phone it was connected immediately. UPDATE: no problems with pairing because. the headphones fit well. They hook on the ear at an angle compared to some old (wired) exercise headphones I've had, but after a few tries I felt like a dummy, they slide well in and around the ear and are comfortable. So far - great sound and functionality for my needs and especially at this price point.

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