Product parameters-Solar panel technology: polycrystalline glass lamination.-Output open circuit voltage: 6V-Working voltage (battery): 3.0-4.25V-Maximum power: 3.5W-Battery: 3.7V 1800MAH 18650 lithium battery-Pump specifications: brushless submersible pump (with light)-Product features: Water pump has water shortage protection and anti-blocking function, which effectively prolongs the service life of the pump. Key Description:A: Power (ON / OFF): Turn on the power switch.B: MODE: Water spray height gear selection (two gears). Instructions for use:1. This product is easy to use. Select a sunny garden pool, swimming pool, etc., connect the pump and solar panel, the solar panel is facing the sun, and the product can work by turning on the power switch (you can select different spray heights through the MODE button) When the sun is full during the day, the pump is powered by solar energy, and the remaining power is stored in the internal battery. When the sun is weak, the product will automatically switch to battery power. If the battery has power at night, the pump can also work normally. 2. This product has functions such as water shortage protection and anti-blocking, which can effectively prolong the service life of the pump. If you find that the pump stops working during use, please check whether the pump is running out of water, or check whether the water inlet of the pump is blocked by foreign matter, please clean it in time and choose a dark environment to completely cover the solar panel, and then reactivate the product It can work normally when placed in water. Pay attention to regularly cleaning the sundries and dirt on the solar panel.