The external noise isolation is a good Seal assuming very high and on an equal footing with other very strong sealing InEars.
Typical of Logitech / Ultimate Ears cable is quite fragile and there at the relevant places no strain relief. Only the higher-priced Logitech / UE InEars with interchangeable cables that get in better quality.
The tonality is very well balanced, with a very moderate amount Midbass- and emphasis.
Who enormously strongly boosted bass examines how they have many InEars in reasonable price range, this will not find it.
The resolution is decent and the bass is also quite dry and fast, the stage is, however, quite small.
Those looking for balanced, tend neutral sound in the low price range, will find it here. Only the cable is, unfortunately, typical Logitech, not exactly inspiring.