How long does the battery really last?

JBL rates it at 76 hours with or without noise cancelling. Expect less at high volume or in cold weather, but even half that is several days of commuting.

Does noise cancelling work on planes?

It is active noise cancelling, so it will cut steady engine and fan noise. It will not silence voices or crying babies as well as premium ANC models.

Can I take calls with it?

Yes. It has a built-in microphone and Bluetooth, so it works for calls and video meetings from a phone or laptop.

What comes in the box?

The headphones and a carry case, per the listing. Check the store page for the charging cable, since that is not confirmed here.

Is the JBL Tune 780NC worth it?

You get ANC, 76 hours of claimed battery and a case in one over-ear. That is fair for a mid-range model, but check it against JBL's own Tune 770NC, which often sells for less.

How does it compare with the Tune 770NC?

Both are over-ear JBL models with ANC and a 40mm driver. The 780NC adds water resistance and a case and claims longer runtime, so it is the better pick for travel and workouts.