I dont know how done this

Round Custom Faces Original Finow face Engine
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I dont know how done this

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same here how do i install faces as i want?

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1.Connect watch to Windows/Mac/Linux
2.Enable USB Storage on watch
3.Create a folder called “ClockSkin” on the SDCard/Storage
4.Drag and drop any new face folder into “ClockSkin” folder on SDCard/Storage
5.Disconnect watch and select the new face… This is Solution by @Lokifish Marz