This Is How to Pronounce the New iPhone Xs and Xr Correctly

On Wednesday, Apple unveiled their latest lineup of tech products — including a new generation of iPhones. Dubbed the iPhone XS, the new additions to the smartphone family feature a number of technological improvements.

But how do you pronounce “XS?” Be careful: following in Apple tradition over the years, the X is actually a Roman numeral. So it’s pronounced ten, as in the number — and followed by S, as in the letter. (Think: “ten S.” Or, if you’re still coming down from the events of the recent U.S. Open, “tennis” is a good memory shortcut.)

To make matters even more complicated, there’s an even bigger version of the iPhone XS with increased screen size that will be on offer as well. This one is the “XS Max,” as in maximum, pronounced “ten S max.” With a 6.5-inch screen, it’s one of the biggest smartphone models on the market in any brand. (The previous available oversized model, the iPhone 8 Plus, comes in at only 5.5 inches.)

And finally, there’s the iPhone XR, which comes in a number of colors at a lower price point and has a new Liquid Retina display and 6.1 inch screen, but has the same camera as the XS and XS Max. Like its brethren, the XR is pronounced “ten R.”

The new iPhones join an improved lineup of Apple Watches and more rolling out this fall. The XS and XS Max will be available in Apple Stores on Sept. 21 and available for online pre-order on Sept. 14, while the XR will be available for pre-order on Oct. 19 and ships on Oct. 26.