First off, Unboxing and packaging for these is high quality and provides a satisfying unboxing considering the price of these it shows in the packaging.
The charger case and headphones feel well built out of premium materials and the app is well built and gave me no issues with setup and it was very straight forward. I use a Bluetooth insulin pump and glucose monitor and was worried this would interfere with the pairing or operation but im happy to report zero issues and no Bluetooth problems so a sign of a well made app.
These are amazingly powerful headphones for the size of them. As someone used to wearing overear full size headphones for bass I was blown away by the bass and sound quality of these. The audio is powerfull rich and deep and bass is punchy and clean. The sound isolation is very good and the earphones provides a comfortable fit straight out the box but came with many tips and fitments to be used for different ear sizes. The app and sound features within it are easy to use and customise such as the equaliser and if you want it to mute when you remove on ear phone.
Overall im very happy with these and i now use these all the time when out and about or doing cleaning in the house