A couple of specs you’ll never hear mentioned at an Apple keynote or find on the company’s website are an iPhone’s actual battery capacity and the amount of RAM inside each phone. Thankfully, Apple has to file this stuff with government regulatory agencies like China’s Ministry of Industry and Information Technology (TENAA).

The company has done just that for its latest iPhones, and you can find links to the filings at MacRumors. The important thing is that we now know the battery and RAM specifics for the iPhone XS, XS Max, and XR.

Here are the hard numbers compared to last year’s devices:

iPhone XS Max: 3,174mAh / 4GB RAM

iPhone XS: 2,658mAh / 4GB RAM

iPhone X: 2,716mAh / 3GB RAM

iPhone XR: 2,942mAh / 3GB RAM

iPhone 8 Plus: 2,675mAh / 3GB RAM

According to Apple’s tests, the iPhone XR offers the longest battery life of this year’s iPhone lineup and improves upon the iPhone 8 Plus by up to 90 minutes. It’s got less capacity than the XS Max, but remember that the XR is powering a smaller, lower-resolution display, which is almost certainly what helps it outlast the Max.

As for RAM, these latest Phones have 4GB. Last year, the X and 8 Plus topped out at 3GB. (Apple’s current-gen iPad Pros also contain 4GB.) Most top Android flagships handily beat this number, ranging between 6GB and 8GB. But iOS has always been good at doing more with less when it comes to RAM, so I don’t think potential XR buyers should have any pause about that 3GB number. iPhone 8 and X owners haven’t done much complaining about memory management.