Samsung Gear S3 SM-R760 - Manual (Page 30)

Basics
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Selecting an item
Rotate the bezel to highlight the item you want to select and then tap the item. When you
rotate the bezel, the highlight indicator will move in the same direction.
Adjusting the input value
Rotate the bezel to adjust the volume or brightness. When adjusting the brightness, rotate
the bezel clockwise to make the screen brighter.
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