It's magic! This amazing gyro wheel spins with great precision, even upside down! A quick flick of the wrist sends the wheel spinning! The gyro wheel spins so fast it becomes a twirling whirling blur! No batteries required! Measures 11.75 x 2.5 x 1.75 Ages 3 & up. WARNING: CHOKING HAZARD Small parts. Not for children under 3 yrs.