Despite its price, it is well worth stainless kettles twice as expensive.
The interior is entirely in stainless steel except the water level window. I have not seen more black deposit on any stainless steel saucepan.
The cover has a spring that holds it in the open position, very convenient for filling one hand. Some reviews say it would not be sealed when poured, but for me it is perfectly sealed, compared to my old tea brand.
For those who want to fill directly from the spout, it is possible if we remove the filter, which for me is useless and that slows the filling and emptying. Warning, this is a 1500W kettle so it may seem slower to heat a kettle of 2200W.
It really is a great product that I recommend without reservation.