Suitable for large containers, such as buckets, sinks, bathtubs, small inflatable pools, etc. Material: Stainless steel, safe, durable, non-toxic, long service life.This water heater does not have an automatic shut-off function. You should turn off the power before removing the water. Immersion design: The water heater uses an immersion design and must be immersed in water. Features:Meet your different needs: Enjoy a super comfortable bath in cold weather, or use our heater to boil water and soak your feet overnight to keep you warm. Applicable containers: bathtub, plastic bucket, inflatable pool, foot bath. Heating seconds: The electric heater immersed in the pendant can heat the water heater in minutes. The 2500W/3000W electric heater makes hot water heating more efficient. Boil 19 liters of water in a small amount of water.