The Yunmai Gyroball is a hand trainer like this you've probably never seen!
It's really cool to have a modern arm trainer that not only strengthens your wrist muscles, but also looks stylish.
Such an expander is the "gyroball" from Yunmai, a partner company of the MIOT ecosystem.
Its principle of operation is a wheel that rotates around its axis using a special rotor.
By changing the rotation speed, the tension on the arm increases, which allows you to "pump" your muscles.
The Gyrobol is made of durable materials, weighs only 270 grams and is equipped with special lighting.
Plus, this arm trainer is very compact. Its dimensions are 70 x 70 x 55 mm, so you can easily take it with you to work or travel.
It will easily fit into any suitcase!
In addition, such an interesting device can be a good gift for a friend or girlfriend who leads a sports lifestyle.
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