Speaker: Insert it back into the hole with the two connection pads on the outside edge and snap the metal clip back into place.

Ribbon Cables: Aligning the connectors can be a little tricky, I found it easiest to gently flex the connectors away from the battery and adjust the angle of the connectors. (See first image)

Gasket \ Seal: This is a critical part of the reassembly as it will protect the internal components from water and moisture damage.

Using a toothpick, apply a thin strip of the the RTV Silicone around the edge of the watch.

Applying the silicone under the ribbon cables will be the trickiest part. I achieved this by saving this part for last and holding the bottom half of the watch above the other, ready to put it in place as soon as I was done.

I placed a pee size glob of silicone onto a post-it note. Then by rolling the tip of the toothpick in it, I could get a small amount that was easy to apply with relative precision.

With the seal in place the top and bottom should gently snap back together. When reinserting the screws gently tighten them in a cross pattern and do not over tighten.