Review (3/5): It straightens, but I wouldn't say it steams.
The straightener comes with a reservoir for water and a convenient dropper for filling, it has a small channel down the middle for the steam to vent out of and allows you to choose how much steam you'd like the come out. The straightener itself heats up quite quickly but the steaming function needs some work.
As you clamp, water sputters out of the holes in the steamer and just spritzes your hair with water leaving some parts damp and others straight. It takes a lot of effort to get any steam but from what little does come out I notice my hair feeling a little softer and smoother than a normal flat iron.