... be choosed 4.Beautiful,widely used for decoration Specifications:Solar panel: 2V, Mono crystal Silicon or Poly crystal ... saving, do not use electricity, but the unlimited solar energy 2. No electricity,outlet or extension cord required ... Waterproof, suitable for indoor and outdoor use11. The solar led string should be installed in a full- ... ad. Signs Backlighting HD-SLS 1.2V solar led string lights