Thames & Kosmos Plasma Ball — 5-inch Glass Sphere, USB-C or Battery Powered

Marvel at a mesmerizing electric light show with this plasma ball. A Tesla coil at its core sends a high-voltage alternating current through a noble gas to the inner surface of the glass sphere, producing glowing electric tentacles you can guide with your fingertips. The 5-inch glass sphere offers two modes: always-on and sound-activated, so the plasma arcs can dance to music. Power via the included USB-C cable (power adapter not included) or with 4 AAA batteries. Product details from the manufacturer: Ages 14+; 5 experiments; piece count: 2; manual pages: 2; product dimensions: 5.2 x 9.7 x 5.7 in; product weight: 1 lb. Batteries required: 4 AAA (or use USB power). Follow all instructions and precautions.