KossBT232i blackgrey Bluetooth

Delivery was sonner than I expected. Device works fine , looks good

I was a long time fan of the wired sport clips as they were the only headphones that fit my very small and super pliable ears. I thought these would at least be similar despite other reviews mentioning downsides of heavy controller and thin loose wire but I was way to optimistic. Not only are the other reviews about the heavy controller and flimsy material true, but the ear clips are so flexible they hold no shape and fall out of my ears super easily. Their base line shape is way bigger than the sport clips and only stay in if I'm sitting down or walking with no bouncing or shaking of the head. Audio quality is not great with an iphone speaker "tinny" sound. The loose hanging wire is super irritating and the heavy controller being on one side actively pulls the ear clip out of your ear. Why they didn't just take the shape and material from the sport clips and create a wireless version of those is beyond my comprehension.

I wish I could give 5 stars for service. I bought this product in February. By end of April, they stopped turning on. No idea why. I called amazon, and they were outside the return period. But, amazon and Koss worked together to allow me to send them in for a free replacement. I just received the new product and it’s working well. Fingers crossed they stay that way.In terms of product performance, as mentioned above, the first pair stopped working after 2 months.Other than that, I was happy. They did their number one job: stayed in my ears, playing music while I exercised. I’ve taken calls while running as well. No problems.In terms of functionality, the volume / battery is heavy and placed in a way that requires the loop be in front of you when running instead of behind your neck. That’s irritating as it means the cord flops around. It would be great if they had a clip. Not a big deal for cycling, or something where you’re not really moving your upper body, but it’s annoying for running.Also, sound quality is only ok. It’s great for the price, but the bass is lacking.Still, as I said, for someone who needs this type of product because of small ears, etc, these work. I’ve used the wired fitclips for years, and now I’m a convert to the Bluetooth.

Amazing range allows me to walk all around the house while leaving my device in one location. Clear sound makes it excellent for voice - e.g. audiobooks, chats, old time radio. The only negative is it is lacking bass so listening to classical music is not what I would like - but then these are earphones and not headphones. The over-ear component and wire is made of a soft, compliant polymer so it fits very comfortably. Between the comfort of the earpiece and range you forget you are listening through earphones. Without question these are the most comfortable earphones I ever used. If only there were a little more bass it would be 5 stars. Given the performance, design and price it is an excellent value.

I'm a big KOSS fan, but these didn't last much more than a year before I started losing sound in the right ear. They fit in my ear decent enough, but they would pull out with how the cord adjuster worked. With that said, they sounded great, wireless worked without issue, and battery life was pretty solid. I liked them when they worked, but I have to downgrade them since only lasted a year. I used them mostly for running/exercise and occasionally at my desk.