[Environmentally friendly] Does not have a built-in battery to store solar energy.Only works when there is sunlight outside.Works automatically in 3 seconds when there is enough sunlight.[4 Nozzles] 4 replacement nozzles allow you to choose your fountain water configuration as you like.[Scenarios] Patented calendula shape, small size and high performance provide flexible use for bird bath, aquarium, pond and swimming pool.[Easy to clean] Keep the water, plate and pump clean to ensure that they do not shade the plate or block the pump.Professional and friendly customer support.If you have any questions, please do not hesitate 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 immerse it in water for less than 3 seconds. 3. Clean the pump regularly to prevent stalling. 4. The pump may not work in 3 situations: ?The pump is blocked by deposits. ?No sun and when the battery is discharged. ?the water level is too low.Water must be at least 1 inch deep. LRFR is committed to providing each customer with the highest level of customer service.