A shock-absorbing seat belt buckle (1) including is provided a housing, a push-button (2) displaceably mounted in the housing, a linearly guided inertia mass (3), and a transmission lever (4) pivot-mounted to the housing, which transmission lever is coupled to the inertia mass (3) by an arm (4a) and supports the push-button (2) against the opening direction with another arm (4b), wherein a sound-absorbing elastic layer (11) is provided between the transmission lever (4) and the inertia mass (3), at least in the region of contact between them.