This watch splits apart very similarly to the Gear Live:

Rear half has the battery, vibrator, and some other fidgety doodads

Front half has the main board and display

First treasure extracted: a springy metal retaining clip that secures the battery. It also hosts a chunk of rubber that that connects the reset button to the microswitch on the motherboard.

Next victim: the vibrator. This particular unit connects via simple spring contacts, unlike the soldered-to-a-board-connected-to-the-main-board approach the Gear Live utilizes.