... .5*W27.5*H42mmSolar panel:0.2W single crystalline silicon solar cell, Shell material:Aluminum Cell:1.2V/600mAH NI-MH ... and external lines.2.Energy saving, low power consumption, used solar power, low cost.3.Non Hazardous Substances, and not pollute ... the environment.4.High warning effect, used wafer chip from Taiwan, active luminous, high luminance, dynamic warning.5 ...