https://arstechnica.com/gadgets/2017/09/apple-watch-series-3-teardown-finds-a-bigger-battery-and-few-surprises/

After breaking apart Apple’s new iPhone 8 last week, popular gadget repair site iFixit released a teardown of the LTE-enabled Apple Watch Series 3 on Monday.

Given that the just-released wearable looks a great deal like its predecessor—big red dot aside—it shouldn’t be surprising to hear that it doesn’t have many major changes on the inside. There’s a new suite of RF chips presumably in place to handle LTE connectivity and a “slightly modified” charging coil to support Qi wireless chargers. But for the most part, the Series 3 is laid out similarly to the Series 2 before it.