First we will open the strap with deployant closure, like the one my grandfather had in the 90's. If your grandfather did not show you how to unzip it, we will do it!

This latch has a metal notch that hooks into a hole. We just have to do a bit of force to separate them. You can also pull the outer rubber out, so the piece itself will leverage and open.

Separate the metal part of the closure to better access the hooks of the belt. We remove the notch from the strap to be able to slide the piece through the rubber.

To separate the strap from the Smartwatch we only have to press the clamping piece as shown in the photo. Once the piece is pressed, it will come out practically alone.

Now you can enjoy your strap with deployant closure! ;)