Does the mic work for calls on iPhone and Android?

Yes. Sony lists the in-line mic and remote as compatible with Android, iPhone, iPad and iPod, so it handles calls and basic music control on both platforms.

What eartip sizes are included?

It comes with hybrid silicone eartips in small, medium and large. Trying each size helps get a secure seal, which matters for bass and isolation.

Is it good for running or the gym?

It is lightweight and the eartips help it stay put, but the 1.2m Y-type cord can snag during vigorous movement. It is better suited to commuting and desk use than hard training.

Does it have noise cancelling?

No. It is a passive in-ear design, so isolation comes only from how well the eartips seal. It will not block engine or crowd noise like an active noise-cancelling model.

Can I use it with a laptop or desktop?

Yes, if the device has a standard 3.5mm headphone jack. The mic and remote work best on phones and tablets; on some laptops the remote buttons may not respond.