Powerball Lightning
Product Details
the physical strenght index not only for 30 sec. but also for 60 sec. and 90 sec.
the current highest RPM
the historical highest RPM
the current RPM
the count of revolutions (hundred unit)
Digital Counter indicating:
Generator and 6 Power LED's inside for bright RED light effect. No battery!
Because of the grip band around the Powerball it does not slip out of your hand.
The housing is made of durable plastic and does not break.
The axle is made of steel and does not break.
The rotation is balanced by computer and thus is absolutely precise.
Features:
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