Pro Noise cancellation
These headphones include a noise cancellation technology that's called "Active Shield Pro". It cancels out noises from around you effectively enough to, for instance, make background noise very silent even on an airplane or when mowing the lawn. On the other hand, the headphones also have a 'Talk mode', so you can hear any sounds around you better without having to take off your headphones, for instance when someone tries to talk to you.
Pro Comfortable to wear even for extended periods
The Philips SHB9850NC are 'over-ear' headphones, which means that they won't squish your ears when you wear them. They're lighter than other wireless headphones too, and have ergonomic ear cushions that don't put a lot of pressure on your head so they're very comfortable to wear.
Con Middle range and voices can be a bit muddy
The balance is pretty good - the bass isn't emphasized too much. The mids get muddied though, and this also effects most voices, especially in podcasts. That loss of voice quality can affect gameplay too - if you can't understand instructions you'll be left more frustrated than you would be otherwise.