A coloredtinted contact lens preview device which is a beauty mirror sales aid to enable a prospective purchaser or wearer of colored or tinted contact lenses to preview the appearance of different color or tint paten of contact lenses as they would appear as a colored or contact lens on the eye of the person. The compositions contain a stabilizer system made up of a stannate stabilizer, a phosphorus containing stabilizer or a mixture of phosphorus containing stabilizers; and an aromatic chelating agent or a mixture of aromatic chelating agents. The event times are used for the processing of ultrasound data or to assist diagnosis. If angular velocity is applied relative to the Y-axis while the drive body vibrates in a certain range about the X-axis by a driving electrode, the sensing body rotates about the Z-axis by the Coriolis force and a sensing electrode senses the rotation.