How does the OHR633 noise cancelling work?

It uses a double-fed noise reduction design, meaning microphones feed the cancellation system from more than one point. Acer does not publish a decibel rating, so expect solid low-frequency reduction rather than class-leading silence.

How long does the battery last?

Acer does not publish a battery life figure for this model. Treat runtime as unconfirmed until owners report real-world use.

Does it have an app for EQ or ANC settings?

No companion app is described. Controls and noise cancelling are handled on the headphones themselves.

Can I use it with a laptop or phone?

Yes. It connects wirelessly over standard Bluetooth and works with common phones, tablets and laptops.

Is it worth choosing over better-known ANC headphones?

Only if simple wireless ANC at a basic level is enough. Rivals from Sony, Bose and JBL publish battery figures, codec support and app tuning, which this model does not.