Small World Toys Science - Electric Light Lab Build an electric circuit with the Electric Light Lab from Small World Science The switch activates the electric light bulb, so kids can tap out messages in Morse code The circuit board is battery operated (2-AA batteries not included) and can also be operated with Small World Science Generator (sold separately) Circuit board measures 3''W x 6''H and is suitable for children age 8 and over For 50 years, Small World Toys has delivered fun, safe, innovative and endearing products for children of all ages