Noise cancelling doesn't appear to be aggressive yet it works. Comfort is good. I occasionally sleep on my side and while they took getting used to I now don't notice them. Most of the control is best done through the app. The tap controls work and are able to be customized but they only control four actions at one time (two per ear). Curiously the app has a A.I. assistant with it. Personally, I find A.I. an annoying waste of time. I thought these were "SLEEP buds"! Sound is ok but I use another app to tune the sound better to my liking. I find some of the downloadable sounds for "local" to be strange ie: electronic goose noises. The charge is adequate for my use and the buds will shut the sound down if they are set to detect sleep which is a plus. Anker seems to be paying attention as they offer regular software updates which have fixed some small glitches. Seriously on the fence given value for cost as to recommendation.

Noise cancellation is weird. They don’t seat properly for recharging so you think you are ready to go to sleep. But only one earbud is charged despite the light indicators that it was charging. Comfortable to sleep in. Battery only lasts 8 hours. Not sleeping in.

I am pleased with the purchase. They work as advertised. They are comfortable. The complaints are the app is not very user friendly and the battery does not last the night if you leave them on during sleep.

[Employee of bestbuy] These earbuds are a dream for side sleepers! The white noise and rain sound feature is fantastic. Plus, the battery life is incredible. I sleep for nine hours and wake up with 40% battery (ANC OFF) playing rain in sound all night. The sound for music and YouTube is also great. I absolutely love these earbuds!

I'm on the fence about these sleep headphones. Part of it is me because I have a hard time sleeping with white noise or any noise alternatives. I have enjoyed the rain setting though and I'd rather listen to that than the industrial noises where I live. I think for the snore masking they need to over more choices. I have noticed that twice my left head phone didn't charge even though it was correctly in the case. I will have to come back to this when I've had a few more months to try them out.