The most popular PowerBall ever, NEON BLUE PowerBall with a Digital Speed Meter!

Product Features: six bright LED-lights that get their power from the rotating motion of PowerBall. Color: Blue, blue LED-lights. Comes with a Digital Speed Meter, 4 modes of operation. Balanced using computer technology. Long-lasting (rotor axel is made of stainless steel). 2-year warranty

Digital Speed Meter's modes of operation:
- Total accumulated revolutions,
- real time revolutions (RPM),
- the highest score record (RPM),
-the physical strength index (30/60/90 seconds).
- Includes lithium coin battery (several years runtime).
- Automatic power off.
- Speed Meter is easy to remove for eg. maintenance.