The present invention relates to a windscreen wiper device (100) for a vehicle, with a fastening element (52), in particular to a motor vehicle. The windscreen wiper device (100) comprises a mounting element (40) which is designed to be mounted on the fastening element (52), and a wiper blade (2) with an elongate upper part (10) and an elongate lower part (12), which are configured to be at least partially bendable. Furthermore, a plurality of connecting elements (18) for connecting the upper part (10) and the lower part (12) are provided, wherein the connecting elements (18) are spaced apart from one another along a longitudinal extent (8) of the wiper blade (2). The connecting elements (18) are designed to permit a movement of the upper part (10) and of the lower part (12) relative to one another with a movement component along a longitudinal extension (8) of the wiper blade (2). Furthermore, the wiper blade (2) comprises a wiper-blade-side fastening part (20). The wiper-blade-side fastening part (20) is configured in such a manner that, by means of a rotation of the wiper-blade-side fastening part (20) relative to the mounting element (40), an engagement can be formed in order to connect the wiper-blade-side fastening part (20) to the mounting element (40).