Review on Build Arm Strength With DINOKA LED Powerball Gyroscopic Ball | Wrist & Forearms Exerciser (Blue) | Father'S Day Gift by Rushabh Bear

I've had 4 of these now. It is more than a single use item, it won't last very long in regular use. None of mine have. I like them and what they do for my hands, wrists, and forearms, but they don't last long. I get a few weeks out of one. When I'm really working regularly with it, I can get my endurance with it up to about half an hour in each hand. Was using one during my comute, started by switching hands and working up time intervals with each hand. And just about the time I felt I had reached where I wanted to be, it started being difficult. It was replaced. Replacement worked as well, and lasted longer because I wasn't doing quite as constant workouts, more trying to maintain the level I had achieved. Its longevity is the shortfall.