Solar LED Round Recessed Deck Dock Patio Light (10 Pack) Automatically illuminates when night falls or with the onset of inclement weather Solar powered durable weather resistant Rechargeable Ni-MH battery (AA Ni-MH 900MAH) included Easy to assemble, no wiring, includes rechargeable battery Dimensions of 4.75" diameter (top) x 2"H x 3"diameter (base)