Set temperature: 150-190°C. This is a professional-grade curling iron. I bought it because my regular hair salon used it, but even at the lowest temperature, it's quite hot for me. I haven't used it much because I'm afraid of damaging my hair if I use it improperly. Operation has been confirmed before listing. Instruction manual included. Warranty card is blank. No box. Shipping will be via anonymous Rakuraku Mercari delivery. Returns are not accepted for reasons such as "different from the image," "doesn't fit," or "didn't read the description carefully," so please ask any questions you may have.