Best product I had ever spend. Had a Jaybird X2 which decided to give up on me and I can say this product meet or exceed my expectation. Audio is really good and comes with strong bass, I would say even better than my good for nothing X2. Battery life is good as well good 6-7 hours on 70% volume. The only thing that I am not used to it is the mic piece. It is kinda big as compared to the X2 probably due to the USB port and bigger battery capacity. Might be kinda annoying at first to look it but however, it doesn't feel heavy at all. Mainly just the aesthetic factor. It also doesn't have the battery notification capability where it tells you your battery life when you first turn it on, but it does show you the battery life on your phone status bar (at least it is on my phone). The ear guides fit well, no issue when running on the treadmill or sprinting. What I think is lacking is the equalizer functionality, unlike the X2 where the Jaybird app provides equalizer which is a huge boost to the X2. I am sure if TaoTronics had that similar functionality it will be a fantastic product. But in the meantime, if your phone has built-in equalizer it fine works as well. Overall it is an amazing product and please don't fall for those big name brands anymore. For what I see, they mainly using same China-made products but charge you more for profits and branding purposes. Oh and also, if you prefer those foam tips, Comply Foam Tips for X2 perfectly fits this as well.
I have looked around a lot and could never find as good a product as this on for the price. The APTX means the sound is great, easy to leave around my neck the whole workday but also easily replaced if lost of damaged. Give it a go.