GDEALER Multicolor String Lights 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.