With the launch of every new iPhone comes an accompanying teardown from iFixit uncovering exactly what’s inside of Apple’s latest device. The iPhone X is no exception, as the popular gadget repair site pried open the much-anticipated handset shortly after it went on sale on Friday.

The teardown reveals a phone that has been overhauled on the inside nearly as much as it has on the outside. The most immediately noticeable quirk is how Apple has laid out the iPhone X’s batteries, which continue to dominate how the rest of the internals are constructed. Namely, the company has planted two cells into the device—a first for any iPhone—in an “L-shaped” configuration.

As iFixit notes, though, Apple seems to have doubled up in order to be flexible with how it could allocate space for the rest of the device’s components, not to explicitly beef up the iPhone X’s overall battery power. The battery capacity here is 2,716mAh, which is slightly larger than the 2,691mAh unit in the iPhone 8 Plus despite the former being about a half-inch shorter. Still, the X’s 5.8-inch display appears to have taken its toll on overall battery life— our iPhone X review found the device to fall well short of the 8 Plus in terms of longevity, albeit it's still decent on the whole.

Also worth noting is how Apple has shrunk the iPhone X’s logic board despite packing in more connectors and components than past iPhones. According to the teardown, Apple effectively folded the X’s board in half and soldered the two sides together. The result is that it fits components that take up roughly 35 percent more space than the iPhone 8 Plus’ logic board area when fully laid out into something that is 70 percent the size of that board on the whole.

iFixit calls this level of miniaturization “unprecedented” but notes that the design makes any repairs to the logic board next to impossible. In general, it gives the iPhone X a “repairability score” of six out of 10, praising the relative ease with which someone can replace the device’s display and battery but lamenting how the glue-heavy, all-glass back would force a user to remove additional components like the rear camera if it ever broke and needed a replacement. Apple has never been the most proactive manufacturer when it comes to making easily repairable devices, so the middling grade isn’t a huge surprise.

Other highlights include a seemingly reinforced Lightning connector, a similarly secure layout for the phone’s dual rear cameras, Apple's continued use of proprietary (and annoying) screws, and a breakdown of the company's new “TrueDepth” facial recognition system.

You can have a look at iFixit’s full teardown here.