The Kogan Smart Dumbbell allows you to easily switch between different weights for your exercises using the dial.
You may find, however, that the dial does not spin freely when you turn it.
To allow the dumbbell's weight dial to spin freely, you must first press the grip into the base.
This means the dial should only spin freely when you apply downward pressure and should be locked at other times.
Below is a short video showing how to use the dial on your dumbbells.
If you have any other questions or concerns, please contact Kogan.com support.