Ⅰ. This is a device that requires little maintenance. It is easy to use. Immerse the device in water, plug it into a grounded outlet and turn it on. Hot water becomes available in just a few minutes. Ⅱ. The 3000W power heats up quickly. Just put the water heater in the water and the water will be heated in a few minutes. It is suitable for home use in the bathroom. Ⅲ. It can be used for taking a bath in cold weather or boiling water with the kettle and keeping it warm all night by soaking feet. It has a wide application range, suitable for home, office or travel. Ⅳ. Do not touch the water or heated container while it is boiling. Unplug the device and check the water temperature. The scald protection and heat dissipation function prevent burns. When the water boils, unplug the power cord and remove the water heater after 10 seconds. It has an automatic shutdown and intelligent temperature control device: automatic shutdown when the water temperature reaches 70 degrees. When the water temperature drops to 50 degrees, it restarts automatically. Ⅴ. Product description: 4 pure copper wires for heating, leakage protection. Function: Burnout protection + automatic shutdown. Electric core: 4 pure copper wires. Pipe: stainless steel. Voltage: 220V. Ⅵ. Note: Please allow 0-3cm difference due to manual measurement. Thank you for your understanding. Monitors are calibrated differently. The color of the item displayed in the pictures may be slightly different from the actual item. Please refer to the size chart before ordering. Ⅶ. Shipping Quantity: 1 set.