12 LED Solar Powered Morocco Lights; Waterproof Outdoor String Lights; Best Choice for Christmas, Party and Wedding decoration; Perfect for Gardens, Patios and Homes (TD-668) Solar powered: power source can be converted and saved to electricity during day. Illuminating at night. (it works only in ON condition.) Water-proof: waterproof design make it also suitable for outdoor. 2-mode: the MODE button controls Steady on/ Flash. (please initially turn it ON) Energy-saving: low heat generating, environmental friendly. Long-lasting: last around 10 hours at night with full power source saved.