Eco-friendly Has no built-in battery to store solar energy. Works only when the sunlight is outside. Runs automatically in 3s when sunlight is enough. [4 Nozzles] 4 spare nozzles allow you to choose fountain water pattern at will. Scenarios Patent calendula shape, small size and high performance feature flexible use for birdbath, fish tank, pond and swimming pool. Easy to CleanKeep the water, board and pump clean to ensure no shading of the board or the pump will be blocked. Professional and Friendly Customer Support If you have any questions, please feel free to contact us. Warm Tips: 1. Solar panels are best exposed to sunlight. 2.Before using the device, remove the film covering the solar panel and put it in water for less than 3 seconds 3. Clean the pump regularly to avoid pump stalling. 4. The pump may not work in the 3 situations: The pump is blocked by debris. No sunlight and when the battery is dead. the water level is too low. Water should be at least 1 inch