Why Choose PACJOY Solar String Lights ? Enhance your outdoor living space’s ambience by adding PACJOY solar string lights . Let's color your life. This fairy solar string lights can create warming, sweet and romantic atmosphere, with water proof function, can even work in rainy days. Decor your home and garden easily, can make it into any shape you like, not any other electric wire needed. How to Check the Solar Panel is ON? ▸ Leave the unit in the sun for an hour and then cover the complete solar panel. If the lights come on, the button is in the ON position. ▸ If not, push in the button once again and put the unit in the sun for another hour. Cover the solar panel again and it should light up. WARM TIPS: 1. Please tear off the protective film from the solar panel before using. 2. The solar lights are not fully charged upon arrival. Please put them under the sun for 2-3 days to get fully charged before first use. 3. They are ONLY designed to be protected from the rain. Please do NOT immerse them in the water.