The water blanket is not as good as described, except that the radiation is a little smaller than that of the electric blanket. First, it is troublesome to use. There are two water pipes, and the blanket covered with plastic water pipes is connected to the hot water box and the water receiving box by hoses, which are also connected with electricity. Secondly, the temperature changes greatly. It has no water pump, but heats water to boiling point. After the steam pressure reaches a certain pressure, it pushes the water into the water pipe of the blanket and finally flows to the water receiving box. After the water temperature drops, the negative pressure water generated by the hot water tank is sucked back into the hot water tank. It is conceivable that the inlet and outlet temperatures of blankets will be different, and the efficiency will be low. The heat generated by electricity will be transmitted to the blanket through water, and the water will eventually return to the box, and the water tank will be exposed to the outside world, and naturally some heat will run away. Finally, every winter, it should be stored after use. When you use it next year, water it and use distilled water. Otherwise, the hot water tank is easy to scale, and users often don't remember how much water to put and what water to put. Finally, the so-called drying on fire is a publicity stunt of the manufacturer. The so-called drying with excessive internal heat is a problem of air humidity, which has nothing to do with water or electric heating. The water blanket will not generate too much steam, which will hardly affect the air humidity, otherwise it will make you add water from time to time, but in fact you don't need to add water all winter. Let's talk about radiation. In fact, the electric blanket uses 50 Hz low-frequency alternating current, which is not as harmful to people as medium-high frequency. Because the current of the electric blanket is very small, the magnetic field it produces is also very small, and the electric field it produces is not much larger than that of the water blanket. Therefore, on the other hand, electric blanket is more energy-saving, cheaper, more convenient, more uniform in temperature, less in radiation than water blanket, and less harmful to human body.