The Kurdene earbuds were received within a few days of ordering. The pairing was way simple. I don't even know what I did but before I knew it they were connected with my phone. I put the earbuds in with the medium size fitting. They fell out several times so I tried a small size. When those fell out I tried the only other size left - the large.
No matter what size rubber tip I used, the earbuds would fall out. But I was determined to use them so I stuck with the small and wore them around the house (they fell out), running (they fell out), outside watering (they fell out). This is a total bummer because they sound awesome. They really do.
I've only had them about a week so I can't make an accurate comment about battery life since I always kept them in the little charging case when I wasn't using them. They were mostly always fully charged when I tried to use them.
I'm looking for wireless earbuds that I can be active in. I like to run and garden but so far I haven't been able to comfortably wear them while doing either of those things.
They may fit you differently so don't completely write them off. If they fit you, you'll love them. Mine are completely unusable.