Product Description Lightening seems to flash and dance inside a clear glass disc. Luminglas transforms electric current into a stunning visual display. Nothing like this anywhere... and to add drama to the display, the accompanying sound response feature has the light pulsating in sync to music, voice, or hand clapping with no wires. From the Manufacturer Can You Imagine using a super bright technology, combined with miniature electronics to create a flat panel disk with an amazing display of plasma light which will respond to your touch, voice or dance to your music? Can You Imagine putting all that amazing technology into a cool wearable clip-on, and because its battery operated and portable, you can clip it anywhere - even in your car? We did. clip on toys - rave toys - pocket toys - pocket plasma - pocket clip - clip on toy - light up toy - sound activated toy - novelty toy - flashing light - festival toy