9 LED Lights;Rapid Flashing Strobe Lights;Requires 3 AA Batteries (Not Inlcuded);Perform Easy Experiments with Stroboscope;Observe The Visual Change of Objects when Stroboscope is Shone On Them

• Perform Experiments with a Compact Stroboscope

Perform Experiments with a Compact StroboscopeArtec Educational