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It is the weigh-controllable dumbbell. The revolution of the ball inside of the dumbbell leads this design possible. If the user wants the different dumbbell weigh, only thing he have to do is just change the revolution speed.
Many people cannot work out because of the lack of time. Also, there are not many places people exercise. This slim dumbbell is a good solution for these busy people. Because of the good portability, it will give healthiness to the busy people.


It is the weigh-controllable dumbbell. The revolution of the ball inside of the dumbbell leads this design possible. If the user wants the different dumbbell weigh, only thing he have to do is just change the revolution speed.
Many people cannot work out because of the lack of time. Also, there are not many places people exercise. This slim dumbbell is a good solution for these busy people. Because of the good portability, it will give healthiness to the busy people.


1.If you push the button, the LCD displays the kilogram you want.

2. Dumbbell weighs depend on the speed of the ball revolution speed.

3. Gravity and kinetic energy make this concept possible.


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Digital portable dumbbell

Digital portable dumbbell

Sang hoon Lee
I love design. Seoul, South Korea