Apple’s latest iPhone lineup is its most expensive yet, with prices starting at $999 for the iPhone XS and $1,099 for the iPhone XS Max. But Apple CEO Tim Cook doesn’t see a problem with that.

In an interview with Good Morning America this week, Cook again defended Apple’s price tags, talked about Apple Watch Series 4, and explained why some devices have avoided price hikes amidst America’s trade war with China.

At yesterday’s iPhone and Apple Watch event, Apple revealed that it has received Food and Drug Administration clearance for the Apple Watch Series 4’s new electrocardiogram feature. In theory, this marks the ascension of the Apple Watch from a wellness health tracker to a full-fledged medical device.

But people shouldn’t be too quick to jump to conclusions about the Apple Watch’s FDA-approval stamp. Adam Masin, a litigator who deals with medical device manufacturers in product liability lawsuits, made a few crucial points on Twitter.