Solarpanel :Mono-crystalline,1.2W Casingmaterials:Upper part: transparent polycarbonate,Lower part: black polycarbonate Size:200*200*46(mm) Powerstorage :Ni-MH battery 1.2V 1600mAh*4,or super capacitor(220F/2.3V*5) Visibility :Over500M Lighting way :Steady,high-luminance LED Worktemperature :-25°Cto+75°Cdegree Waterproofgrade :IP68 Viewdistance :Over500m Woking in dark:14hours after a standard luminous intensity day, 36 hours if battery charged fully AvailabeLEDcolors:Yellow/white/red/blue/green Application This unique Solar Brick is suitable for all kinds of landscapes and architectures, either for large-scale public area or private space (park,swimming pool,garden,square,etc).