Poor design make these are very annoying. The back is too heavy so it wants to slide down your back when they're in your ears. They also fit kinda awkwardly in your ears. Hard to adjust comfortably. They added 3 clear plastic neckbands after they discovered their design flaw. Neckband works but I was hoping I wouldn't need it.
HOWEVER... Having said all that, the sound quality are good. Battery life good. Originally sold around $100, so if your looking for a bargain they are only $25. But, I don't think they would work well for runners.
I have lots of Bluetooth headphones. I always like a bargain and to have a spare if one runs out of juice or breaks. I've spent big bucks and I've spent chump change ... And all seem to last about the same amount of time before they break. Usually just one ear goes out or shorts out. These do seem pretty durable compared to a lot of others, so far. Time will tell. Yea, I guess they're worth $25.