Stepless Adjustable Speed: PET MARVEL pet hair blower equipped with a powerful and stable 27000RPM motor, you can change different speed levels of airflow to 100-220MPH (45-100m/s). It quickly dries the dog's hair at 5-40 minutes according to laboratory data (small: 5-10, medium:10-20, large:20-40) Adjustable Temperature with Safety Control: This dog hair dryer has a built-in heater, the button (+ -) can conveniently adjust the temperature to 104-140℉/40-60℃. Heating control protection system, if the temperature is too high, it will stop heating immediately to avoid any danger Negative Ionic Technology: Our pet blow dryer allows you to activate the negative ion function with a single touch through LED smart control. With a built-in 20 million ions generator, this blow dryer releases negative ions that help reduce frizz, static, and drying time, leaving your pet's fur soft and shiny Flexible Hose&Optional Nozzles: Comes with 3 different types of nozzles: concentrator (max force airflow), flat nozzle (focuses the airflow to the roots of the fur), and diffuser nozzle (gently dries the fur while adding volume and preventing tangles). And the flexible hose can be expanded to 80 inches/200cm Superior Customer Service: Please feel free to contact us If you have any questions. PAY ATTENTION to the abnormal noise we found due to the shipment, once it happened, please immediately contact the support of PET MARVEL (not Amazon) for a change of the relevant part