The new watch features a built-in GPS, a larger Taptic Engine and the S2 SiP module (featuring a dual-core processor and better graphics).
iFixit’s teardown we can see that the antenna is a lot larger, where we suspect that this is due to the inclusion of GPS.
Its Taptic Engine is also larger, where it uses a different way of method of feedback. By using a ”
linear rsonant actuator“, the Series 2 watch provides Apple with greater freedom for customising the feel of the vibrations, while for users like us, it changes the way it feels and is perceived as being more responsive.
The Apple S2 SiP, the module that houses the dual-core processor and is the brains within the chassis is actually flipped versus the original watch. Unlike the
original Apple Watch, the Series 2’s SiP is flipped, making the connector wires face the right way.
This internal design change most likely shaved a few millimetres of space within the watch, thus allowing for a larger battery and larger Taptic Engine. Read next:
Apple Watch buying guide 2016.