Used a few times for overseas travel. I think it's generally clean. The instruction manual is missing, but you can download and view it on the manufacturer's official website. The following is from the official website: Compact model with negative ions, compatible with overseas travel. Power supply: AC 100-120V/200-240V 50/60Hz Power consumption: 100/200V: 850W 120/240V: 1200W Main switch: HIGH-LOW-OFF Cord length: Approximately 1.7m Size: Approximately 181(W) x 80(D) x 196(H)mm Weight: Approximately 410g #Overseas compatible hair dryer #KOIZUMI #Negative ion hair dryer #KDD-0017/VP