JSOT Solar Outdoor Lighting Products: Tips:】 1, The charging effect depends on the temperature and the time of direct sunlight. (The heat and temperature of the sun are relatively low in winter, and the lighting time in winter is slightly shorter than that in summer. This is a normal phenomenon. We hope you can understand. Thank you in advance.) 2, Please feel free to let us know your issues or concerns any time, we offer 180 Days Guarantee and Technical Support for every customer. c Product Information: Material: Hight ABS&stainless steel material, withstand all kinds of bad weather(Rainy, Snowy, Hot weather). Working Principle: Built-in light sensor, automatic turn on at night, turn off and charge at daytime. No manual operation is required. Solar charging, no need to connect to the power supply, and no electricity bills. (Charging 4-6 hours, working 6-8 hours.)