The Apple Watch Series 10 features a case that is a bit larger and thinner compared to the Series 9. Nevertheless, the modifications in design and functionalities are rather minor, and the overall construction of the smartwatch remains almost the same as its earlier version.
Inside the Smartwatch
To access the internal components of the smartwatch, one must first remove the display from the case. The screen is secured using a substantial amount of adhesive. Once you take off the display, it becomes impossible to put it back on; the display cable is arranged in a manner that requires almost complete disassembly of the smartwatch to swap the screen out.
Battery and Other Components
Fortunately, the battery and the Taptic Engine can be swapped out fairly easily once the case is opened. However, the mainboard, which includes the processor, RAM, and storage, must be replaced as a single unit, similar to the glass back and all sensors present in the smartwatch. It's almost funny how little has changed between the teardown of the Apple Watch Series 10 and the first-generation model: even after ten years, Apple has made only slight adjustments to the smartwatch's design.
Repair Rating
iFixit has rated the Apple Watch Series 10 with a repair score of 3 out of 10, indicating that the design modifications for easier repairs are significantly overdue. Apple itself provides a battery replacement service priced at $99. For any other type of damage, Apple suggests a complete replacement, which can range from $299 to $399 depending on the model.
iFixit (YouTube)