Air tools are one key thing when trying to grow or manage your hair, the wrong tools can hinder most of the progress you are seeking to make. Now if you have soft silky hair, hair management is so easy peasy for you. Great for you, we love you too but we with thick or coarse hair want at the very least to have worthy tools for our battle with the hair. Being black, I have very thick tight;y curled hair, so straightening it takes hours. The thought of just running a brush through my hair and having it all straightened is so drool worthy. The only down side is the limit of its temp setting, if it could go higher, meaning faster straightening for really curly hair. It took some time but it did straighten my hair, without me spending back breaking hours, sectioning and straightening my hair. All it took was slow even brush strokes, through my mane and little by little I saw it straightening my tightly curled hair. Another flaw for me is in its design, that being the position of the control buttons. The buttons being by the side on the grip handle, means that every time you apply pressure to drag the brush through thick hair your fingers will be hitting the controls. messing with the temp settings. With that being said this is worth the buy. This brush has been a worthy addition to my arsenal, its design and function means better control over the mane. Trust me taming the 'Fro' is no easy task and any brush that can tangle with mine and not limp out a broken sordid mess is worth a mention. Its rounded red rubber tips make for great heat protection and massaging of the scalp that helps circulation and hair growth. New item in sealed box. Input: AC110~240V, 50~60Hz. Rate power: 45W . Temperature Control 140~200 C. Dimensions : H 28× W 4 × D 3 cm. Plate Size: 10 X 4 CM.