He sits quite wonderful and is also suitable for longer missions. The build quality is sturdy and stable. It is light and compact enough to take him in a bag or backpack.
The iPhone remote control with built-in microphone works quite excellent. With the Apple MacBook Pro works with both microphone and volume control.
The shield with the outside world is quite good, but it is not completely isolated. Nevertheless, one can listen to wonderful with these headphones on a plane, bus or train at medium volume.
The headset is very neutral in tone. Quite truly so you hear exactly what is present in the recording. This also manifests itself in restrained bass and generally somewhat lower volume. The bass response is excellent, ie low tones are reproduced well. But if magnification is not used or is powerful bass, has helped along by Equalizer. But when bass in the song is decent present, he also comes to the fore. Mids and highs, however, are always plentiful. It is typical of good headphones that you suddenly realize how bad and supercharged some recordings.
For me this is the headset that I like to take if I have enough space. Traveled with public transport and iPhone he does very well. But even when I'm working with the laptop somewhere else, it is the instrument of my choice. Unfortunately, he can not fold up very far. He's always a little bulky. Just because this is a headset on the go, AKG could invest in a more compact folding mode and a bag.
For stationary use at home or in the office it is certainly suitable. But since it comes with a bulkier and cheaper headphones with long cable (eg Audio Technica ATH M50, Sony MDR-7506) a little better off.
Addendum: If you are a while in the sun, the metal handle is very hot. This is, however, also quickly as soon as one leaves the sun.
zl; ng super neutral sound on the go and at home, Bass could be a little less discreet, could be somewhat smaller foldable.