According to the information found, the brush is rotating.

Power: 400 W :)

You can see the differences at the following link: https://www.galaxus.ch/Comparison/219036-254534 . The Satin 7 has a length of 39.8 cm and the head has a diameter of 35 mm. In this article, the length is 34.80 cm and the heads have a diameter of 38 and 23 mm.