They do what they say on the tin, I guess, but there are a few problems that make them a bit of a rip off for the price, to be honest.
No adjustment on the headband means that unless you’ve got an exactly right-sized head for the band, it’ll slip off in the night. The set I bought for my fiancée does exactly that on her. Would definitely recommend buying a size smaller than you think you need!
The actual controls on the inside are pretty basic and the charging port is so snug that’s a bit of a faff to charge.
On the plus, it’s easy to set up and the sound quality is decent, providing you’ve got the earphones directly over your ears.
I’m still using them most nights because they’re paid for now at the end of the day and aren’t bad enough to warrant sending back, but I’m not sure they’re worth the better part of £100.