Description:The copper tone solar post lamps illuminate the perfect amount of ambient light for your quiet romantic evening outdoor. At the same time, it could be a great conversation piece for your outdoor gatherings. Using sunlight to recharge the internal battery, these lamps are ready to provide you with ambient lighting any time of the evening. Size Fitting:Wood or Composite Posts : must be smaller than 3-13/16" squareHollow Vinyl Posts : inside opening must be larger than 3-15/16" square Specification: Sun PoweredNo WiringOn/Off switchUltra Bright LEDPowered by the sunFast & easy installRechargeable Ni-Cd AA battery includedEnergy, electrical savingIdeal for areas where conventional electrical supply is not availablePlastic Copper Square Deck Post Fence Mount 4"X4" CE certifiedUser controllable on / off switchCE Certified for ultimate safetyUpper Base Dimensions : 4" (l) x 4" (w)Lower Base Dimensions : 4" (l) x 5.5" (w)WILL FIT 4" x 4" POSTSSolar Light Dimensions : 5.5" (l) x 5.5" (w) x 4.5" (h)One High output long lasting ultra-bright white LED bulbMore expensive ultra-highly sensitive solar panel usually seen on calculators is usedAutomatic dusk-to-dawn operation, On/off manual over-ride switchRecharged by solar panel under sunlightLight turns on automatically when darkSafe Water ResistantCorrosion resistant