How do I change the armband frame?

Here are 2 video demonstrations showing how to swap over the frame.*

No tools 

(You may like to use a thin metal blade to save your nails)

Using cuticle cutters as a tool

*Spare pins  are provided in the box with each new Tempdrop purchase. If additional pins are required, they are inexpensive and available from any watch repair store or online. They are 20mm standard watch band pins.