The original and 2nd gen Watch SE use aluminum bodies. There should be a chipset upgrade too. Apple’s September 9 event introduced the new Series

While the plastic Watch SE model is still in development, things are moving forward and the source states that it will see a potential launch next year. The shift to plastic has also posed some problems related to quality, but all of this is expected to move at a faster pace once Apple completes the transition to titanium for its premium models.

Apple is working on a new plastic version of its Apple Watch SE to offer a more affordable and kid-friendly option. This move comes as schools increasingly ban mobile phones, making the smartwatch a viable alternative for children.