CuraBall Hand Trainer Reviews and Complaints When the internal rotor of the CuraBall Hand Trainer begins to spin, it creates a gyroscopic torque that naturally resists any change in the device's orientation. If you rotate slowly, the CuraBall Hand Trainer provides a gentle, therapeutic massage-like resistance; if you speed up your wrist circles, the RPM increases and the CuraBall Hand Trainer becomes a powerful strengthening tool. To start the process, a user simply pushes the rotor of the CuraBall Hand Trainer in the direction of the indicated arrows to wind the internal spring, and then releases it.
CuraBall Hand Trainer Reviews and Complaints This rotor is housed within a high-impact polycarbonate or aluminum shell, ensuring that the CuraBall Hand Trainer can withstand the rigors of daily use without sustaining damage. To help users track their progress and stay motivated, the CuraBall Hand Trainer is equipped with a built-in LCD progress tracker that displays real-time data such as rotations per minute (RPM), estimated force or resistance, and even a calorie counter. This screen is powered entirely by the kinetic energy generated by the spinning rotor, meaning the CuraBall Hand Trainer requires no batteries and never needs to be charged, making it an eco-friendly and hassle-free choice for consumers. The exterior of the device is wrapped in an ergonomic, anti-slip silicone grip band, which ensures that the CuraBall Hand Trainer stays securely in your hand even when the resistance reaches its peak. Order Now CuraBall Hand Trainer Pros & Cons