NSD Power Ball Wrist Exerciser

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A gyroscopic device to help you add strength to the muscles of your wrists. As it's non-impact and uses the natural motion of your wrists it can help to rehabilitate injuries - which is why I bought it. In very good condition. In original box. Bearings sound good (no obvious sound of wear, dust or lint). Surprisingly, even the display still works. The battery looks as though it's probably replaceable but will need a teeny tiny watchmaker's screwdriver (the screwdriver - not the watchmaker). Even if the battery goes flat, the display is not necessary for the Power Ball to carry out its main function. One pull-cord included. Replacements easily available.