Is the WH-CH720N worth it over the WH-1000XM series?

If you want Sony noise cancellation at a low price, yes. The XM series costs much more and cancels more noise, but the CH720N covers the basics at a fraction of the price.

How long does the battery last?

Sony rates it at up to 35 hours with noise cancellation on, and quick charging gives hours of playback from a short charge.

Can it connect to two devices at once?

Yes. Multipoint pairing lets you stay connected to two devices and switch between them, such as a phone and a laptop.

Does it have a microphone for calls?

Yes. It has built-in mics with Precise Voice Pickup technology for hands-free calls and voice assistants.

What comes in the box?

The headphones, a connection cable, a USB charging cable and a limited one-year warranty.

Does it have an adjustable ambient sound mode?

Yes. It has an adjustable Ambient Sound mode and Adaptive Sound Control, so you can let outside sound in or have the headphones adjust to where you are.