soalr car 1,are very polular as the gifts 2,attractive price 3,no battery required solar carCertifiact:CE,RoHsSize:32*15*21mm Weight:N/W 4.6g G/W 10ga.solar enegy,environmently friendly.b. powerd from sunlight, working directly, no contral.c.It's a fun and educational way to lean solar power.d. Amazing gifts to make Chirldren happy.e. don't fit for kids bellow 3 years old.