Baxstel Solar Outdoor String Lights with 16pcs Shatterproof Bulbs,50Ft Vintage Edison Bulbs Commercial Grade Weatherproof Strand Heavy-Duty Decorative LED for Patio,Backyard,Porch,GardenLarge&High Efficient Solar PanelThe first solar string light which has built in tempered glass for solar panel to ensure excellent charging performance in low light. the 5W Monocrystalline silicon which is up to 20. 5% Conversion Rate,it's more durable and suitable for long term use. Auto Turn on offBaxstel outdoor solar string lights has built in light sensor which control the light automatically to turns on at night and off at dawn. Perfect