In the following steps, the band release buttons and springs may fall out. Be careful during the disassembly, as they are very easy to lose.

The band release buttons are equipped with a tiny spring on each end. The springs are mandatory for the buttons to function properly.

During reassembly, make sure each band release button has its two springs, and the buttons are repositioned in their recesses.

If a band release button falls out and the springs aren't on the button, they may have gotten stuck in the watch during disassembly. Use a pair of tweezers to remove them from the watch and place them upright into their recess on the button for reassembly.