steel plate(large)/resin(small), size for 275x90x310m/m (large) 275x70x250m/m (small), AC 110/220V(can choose), battery for 6V8A(large)/6V4A(small), a light bulb for 6V3Wx2pcs(large) 6V4WX2pcs(small), to keep light for 6hours (large)/3hours(small), use in an electric power cut and home