Thermo Control Technology】Laifen's exclusive technology compensates excessive heat by alternating hot and cold airstream, to avoid hair damage. The Thermo-Control microprocessor monitors the air temperature 100 times per second and makes small regular adjustments to avoid your hair from being damaged by extreme heat. 【High-Speed Brushless Motor & Fast Drying】Laifen hair dryer is equipped with a 110,000 RPM high-speed brushless motor, wind speed reaches 22m/s. Strong airflow can dry hair in a short time, which is 2x faster than traditional hairdryers. Usually, it takes 2-8 minutes to dry hair, depending on hair length & thickness. 【Negative Ionic Hair Dryer】Laifen hair dryer has 200 million negative ions, making your hair silky without the frizz. Ionic will lock the moisture in your hair and bring your hair natural shine. 【3 Color LED Ring Light & Low Noise】You can turn the LED ring into different colors by switching the heat button. Red indicates 80 degree hot air, yellow is 50 degree warm air, and blue is cold air. Press and hold 2s to active circulating mode, shifting hot & cold air every few seconds. The noise of the ionic hair dryer is only 59dB when working and will not disturb your family's rest. 【Safe & Lightweight】Laifen hairdryer weighs only 0.9 lb/407g, small and portable, ideal for home and travel. Ergonomic design, simple button, 360° rotating magnetic nozzle and filter make the blow dryer easy to use. Filter mesh is very close and won't suck hair. Portable hair d