Model: H7131 Stay warm during the coldest times of the year with the Govee Portable Smart Heater. With features such as 4 heating m odes and a built-in sensor, your heater will always be at the right temperature you desire. 4 Heating Modes & Fan Modes: Rapidly heats up within 2 seconds with PTC ceramic heating, an energy-efficient technology. Automatic Constant Temperature: Built-in sensor supports basic thermostat functions or pair with Govee Thermo-Hygrometer for an upgraded thermometer. App & Voice Control: Control with Govee Home App or use voice assistants such as Alexa and Google Assistant. Low Noise & RGB Night Light: The space heater operates below 40dB. Change different RGB light colors via Govee Home. More Safe & Convenient Functions: Enjoy features such as tip-over protection, overheating protection, safety lock, and timers.