1. PTC Ceramic Heater - This heater uses an advanced ceramic heating element design to provide faster and more energy efficient heating than traditional electric heaters. Small but powerful space heater for bedrooms, offices and under the desk. 2. Overheating and tipping protection - the heater shuts off in the event of tipping, tipping over or overheating. In addition to being safe, the device also protects against air pollution with a filter that prevents dust from entering the fan when in use. Safety features make it a great choice for families with young children or pets. 3. 3 operating modes - two heating levels and a fan mode, low heat (500W) and high heat (800W) ensure that the temperature is always to your liking, allowing this product to be used almost all year round. Warm up all parts of your body and the space around your cold home, dorm, college, camping tent, or frozen RV. 4. Low Noise Design Powerful Heater - A quiet heater for your office, bedroom, etc. It makes less noise than any other commonly used heater. The volume is like people are whispering.