iFixit pried the Series 2 open and found
a much stronger adhesive than in the 2015 model, likely for the purpose of water resistance, as iFixit speculated.
Much like the iPhone 7 Plus, the Apple Watch 2 also features a larger Taptic Engine, as well as
a much stronger adhesive sealant to improve its water resistance.
Not exact matches
In a statement issued over at the CrackBerry forums, the company says it has started shipping new KEYone units that feature
much stronger screen
adhesive.