Solar LED string icicle lights. The solar string has modes of permanent lights or flickering lights that can be described as dripping icicles. Solar string lights are suitable for a decorative design of the garden, yard, porch, trees, shrubs and more. The solar string lights are waterproof and can lights up for several hours. It is recommended that the solar panel be placed in a maximum exposed t place in the sun to get maximum light. Energy efficient.