Intelligent: The water heater without liner can be operated by remote control and buttons, and the LED screen displays the temperature in real time..Real-time heating: the product can be heated without preheating. The water heater without liner can continuously heat water for 24 hours, which is energy-saving and environment-friendly..Portable design: The water heater without liner is small and exquisite, saves space, and is easy to install and disassemble. Compact size and lightweight design make it easy to carry. It can bring you an amazing hot shower when you are camping, going to the beach, etc. You can also bathe your pet outdoors with this tankless water heater..Insurance: Water heater without liner, with leak-proof protection inside. There is something wrong with automatic detection. If something goes wrong, the tankless water heater will automatically disconnect and turn off. This liner-less water heater material is waterproof and nonflammable..Multi-purpose: This tankless water heater is suitable for various occasions, such as floor heating, kitchen water, daily washing, and bath hot water.