The T3 Transforming Solar Robot has to be one of the cleverest little robot kits around & what's more, it doesn’t even need batteries to work. It is fully activated by sunlight! Its dynamic movements are stimulated by sunlight. The easy to follow instructions make it a fun, yet simple procedure to build so it is a great gift for young children, particularly those budding scientists that have an interest in solar energy. Sunlight will really make your robot come alive!