Please note: The internal sound is the Tip-Over Protection switch, which is normal.Our heater adopts the latest PTC ceramic heating technology, which can release a large amount of heat in a short period of time to heat a small space. Ceramic heating willnot produce bad plastic or chemical smell, and the warm air is more gentle to keep the air Fresh, provide faster, more efficient, longer, and safer heat transfer than traditional heater fans. Advanced safety:Built-in Tip-over switch, automatically shut down when the heater is dumped. The overheat protection sensor can ensure that the heater is automatically turned off if the temperature is too high or the environment is unsafe 50Hz. Portable personal heater: mini heater weighs: 0.65 kg, size: 168108128mm. Its compact design and handle can easily transport it to what you need Any place, small size, you can put it in any place of your own room, office, bedroom, garage, etc. Verysuitable for heating small spaces. 2 power settings and natural wind settings: including 900W (high) and 600W (low) 2 power settings; at the same time, the fan and heater are combined into one, this space heater has a unique natural wind setting, very Good to promote indoor air circulation. [Best gift]: Retro TV shape, classic black and white color, knob switch, elegant and atmospheric. room heater is not only practical and beautiful, it is the perfect gift for Christmas/Thanksgiving/Black Friday/Net One.

Note:Shipping time is 5-12 days