Light box size: height 382mm,width 384mm,thickness 171mm Light source size:diameter 300mm Light source color: yellow(wavelength 580-585mm) Light source shape:round ,with "slow"word,arrow Light source flashing occupying rate:17% The maximum light source power:6.2W Size of solar panel:290*268*25mm Output power of solar cell:8W Output voltage of solar cell:18V Accumulator capacity:12V/17Ah Illuminating time under continuous overcast and rainy days:8 days Working temperature:-15C---60C