Do these work with USB-C iPhones?

No. They use a Lightning connector, which fits iPhones and iPads with a Lightning port. Newer USB-C devices need a different connector or an adapter.

Do they need charging?

No. They draw power from the connected device through the Lightning plug, so there is no battery and nothing to charge.

Do they have a microphone for calls?

The product information does not specify a microphone or inline controls. Check the connector end for a mic and remote before relying on them for calls.

How do they compare with wireless earbuds?

They skip pairing and charging entirely, which suits people who want zero battery management. Wireless buds offer freedom of movement and usually more features, at the cost of charging.

Will the chrome finish wear off?

Polished metal-look housings typically show fingerprints and fine scratches with daily use. Storing them in a pouch rather than loose in a pocket helps keep the finish clean.