TOYSMITH Sci-Fi Tube [Powered by Human Electricity]
Erie sounds and powered by HUMAN electricity, this sci-fi tube is the ultimate gift.
Enjoy hours of fun and learning with the Toysmith Sci-Fi Tube. Activate this tube's sound and light effects using only touch with this human-powered tube. Touch both silver contacts at the same time to complete the circuit of the Sci-Fi Tube. Join with friends and family to create an even bigger circuit. Batteries are non-replaceable.