Imagine if you could have a whole set of dumbbells in one sleek and compact design. The Control Dumbbell by Sang-Hoon Lee achieves that by allowing you to digitally adjust the weight of the dumbbell.
How does it work? The magic behind this design is having tiny balls inside the dumbbell that spin. The faster these balls spin, the heavier the weight they generate, and the bigger your biceps get.
You can adjust the speed of the balls, and hence the weight of the dumbbell, by rotating a dial and pushing buttons. The set comes with a charger cradle to charge the dumbbell.
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