20mm:
> For Samsung Galaxy Watch 3 - 41mm
> For Samsung Galaxy Watch - 42mm
> For Samsung Galaxy Watch Active2- 40mm
> For Samsung Galaxy Watch Active2- 44mm
> For Samsung Galaxy Watch Active
> For Samsung Gear S2 / Gear S2 Classic
> For Samsung Gear Sport
> For any other standard 0.78" (20mm band width) watches.