There are several reasons why the Bluetooth chipset and codecs used in your Jabra earbuds matter. The chipsets you want to look for should utilize Bluetooth 5.0. Not only does this give you good battery life, but it also allows for a good connection between your earbuds and smart device. As for the codec, this has to do with the audiovisual lag. If you intend on watching videos while you are running on the treadmill or utilizing weight machines, having little to no lag will make your experience better.