Here is a grip ball that helps strengthen your hands. This App Connected Hand Grip Trainer is also great for stress relief. The companion app has various games for you to play. The Oriori Grip Ball has a 6-axis chip and grip force sensor for tracking. It lasts up to 80 hours on battery.
More gadgets like this ➡️ : here
You can use this tool for grip, finger, and arm training.
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