GDEALER Solar String Lights 20ft 30 LED Warm White Crystal Ball Waterproof Outdoor String Lights Solar Powered Globe Fairy String Lights for Garden, Home, Landscape, Christmas Decoration (1) This wonderful 30 crystal ball solar string(NON PLUG-IN) waterproof lights is ideal for decorating your home,gardens, patio, lawn, porch, gate, yard, etc. With 2 switch, one is Mode (Flashing mode convert switch), another is Power On/Off(After switch turned on, can automatic light control and charging). Solar powered panel is stood by a 20cm garden spike. With ON/OFF, MODE switches. Work by changing the solar energy into electric energy, it can continuously work more than 8 hours at night if the panel absorbs enough sunshine during day. Energy-saving and environment friendly, with high-tech solar panel, the string light lights up by using the electricity that converts from the sunlight of the built-in rechargeable Ni-MH battery.