Several profiles can be recorded. 3 or 4 I think. The key play / pause is very effective in the public transport to listen to the announcements of the controller etc. Ditto for the volume button / next very intuitive and necessary given that these headphones isolated medium. The pads are comfortable. We do not feel the weight of the helmet once on the head.
When you're done with music, more searching in the cable jacket to disconnect. Just remove the helmet and put it either around the neck or in the bag.
His level is good. But not worth a wired Sennheiser. If you want Bluetooth is the range of Philips headphones that wins deal with Sennheiser, Sony etc.
So I said it is "good" but not amazing. The sounds are clear and distinct but lack punch in general. Some music in 320kbs lack presence. Except maybe the bass that are beyond reproach.
In the wired headset keys no longer work. It is useful that in airplane mode or in case of empty battery.
I did not notice any difference in sound between the BT mode and Wired. No full reading can be cut except when manually change the music. Sometimes we hear a short interruption at the very beginning of the present. Nothing wholesale embarrassing.
Autonomy is over 10 hours. The helmet thus takes a good week before needing to be recharged.
Finally. Can the bluetooth replace the wire? I would say yes if it's just for listening to music outdoors while seeking freedom of BT.
In short my Sennheiser earpiece faulty cable will remain in the bottom drawer of a good time.