Thank you for viewing! The outer box has been opened, but the inner bag is unopened, so it remains as is. Immersion Heater Electric Immersion Water Heater Rod Pool Heater 1500w Automatic Power Off Bathtub Water Heater for Inflatable Pools Home Outdoor School (with wire brush and Japanese manual) Reference price: 2680 yen Energy-saving and Rapid Heating: The electric immersion water heater has a power of 1500 W, and 10 liters of water boils in about 4 minutes. However, the specific time to heat the water is greatly related to the air temperature. Heating 10 liters of water in summer and winter will take a little longer in winter. No thermometer is needed, and you can see the water getting hot with the naked eye. The power consumption is 1.5 kWh, saving a certain amount of gas costs for taking a bath. (This product needs to be monitored by someone while in use) Easy Operation: Fill the container with water to completely cover the pool heater and plug it into a grounded wall socket. Before plugging in the heater, make sure the heater is completely submerged in water, then connect the easy-to-use power supply. One wire brush is included as a gift. Due to water quality issues, the core inside absorbs impurities in the water, and after a while, floating matter and sediment will appear when heating the water. Remove the circular cover by rotating it strongly and clean the core inside with the wire brush. Automatic Power-Off Heating: A 1500W electric water heater with high power, energy saving, rapid heating, and automatic power-off function. When the water is heated to 70°C, the water heater will automatically turn off, and the indicator light will turn on. It will turn off. After heating the water, immediately unplug the water heater. Automatic power-off repeats heating as the water temperature drops, and repeated heating causes the water volume to evaporate, which can easily lead to a fire if used with a water level lower than the water heater's temperature sensor. For safety, please use the heater correctly. High Performance: After PSE safety certification product testing, the water heater has an automatic shut-down function with a product life of over 100,000 hours. It automatically turns off when the water temperature reaches about 70°C. If you don't unplug it, it will heat up again when the water temperature drops to about 50 degrees Celsius. (Do not touch the water: Do not touch the water when heating.)