Is the noise cancelling actually effective?

It is real active noise cancelling, but expect it to soften steady low sounds like fans and traffic rather than silence a plane cabin. Premium ANC earbuds cut more noise.

How long does the battery last?

Onn rates up to 22 hours of listening with the charging case included. That is workable for a few days of commuting but shorter than many rivals in the same category.

Can I use them for workouts?

Yes. The IPX4 rating means they resist sweat and splashes, so gym and light outdoor use are fine. Do not swim or submerge them.

Do they work with iPhone and Android?

They connect over standard Bluetooth, so they pair with both iOS and Android phones. There is no special ecosystem lock-in.

What comes in the box?

Expect the earbuds, the charging case, a charging cable and spare ear tips. Exact accessories can vary, so check the package contents.

Are they worth it over a major brand?

If you mainly want cheap ANC and basic wireless listening, they cover that. If sound quality, strong noise cancelling or app features matter, a mid-range brand model is the better buy.