1),ionic funcation 2),concentrator and diffuser for optional 3),cool shot 4),removable filter cover ... Medium Hair DryerFUNCTION1), medium hair dryer2), Ionic function and ionic indicator light for optional3), with concentrator4), Cool shot funcation5), 2 slide switches ... '=4092PCS 40'=8496PCS OUR PRODUCTS EQUIPMENT professional medium hair dryer with diffuser and concentrator DC motor