FULLBELL Solar String Lights 100 LED Decorative Twinkle Lights IP65 Completely Waterproof Outdoor Light for Patio, Gardens, Lawn, Wedding Party (Colorful) Auto on at dusk, auto off by day; 2 working modes: Steady on and Flashing; Angle-adjustable spike for optimum sunshine exposure Super length: 39.4ft; Larger capacity of 1800mAh summer ensure 8-12 hrs steady-on mode or 10-20 hrs flash mode(winter: 2-5 hrs) 100 LED lights STEADY or FLASH in a string, forming a beautiful and fairy world, ideal for decorating your gardens, patio, lawn, porch, gate, yard, Christmas lights, wedding, party etc This kind of light is decorative light which designs for soft light. Waterproof, product is suitable for both indoor and outdoor landscape decoration; It is designed for creating a peaceful and tranquil atmosphere, so it is not as bright as ordinary light Solar panels rely on significant levels of sunlight to operate efficiently. Snow or dust, combined with moisture can accumulate on solar panels and reduce energy production. During cloudy/foggy days, or in winter, there sometimes may not be sufficient solar heat gain to deliver high brightness of this spotlight. When solar panel is installed, the tilt and direction of the panel should be optimized to generate the most electricity possible over the course of a year