Lightess Solar LED Water Drop String Lights for Christmas Tree Outdoor Decoration 20 LED 15.75 FT This wonderful string light illuminates during night, ideal for decorating your gardens, patio, lawn, porch, gate, yard, etc. Super long working time, it can continuously work more than 9 hours at night if the panel absorbs enough sunshine during day. Waterproof, suitable for indoor and outdoor use. Solar powered panel is stood by a 7.9 inches garden spike. With ON/OFF, MODE switches. 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).