The Combined Nomenclature (CN), v1:2018
9106 90: Time of day recording apparatus and apparatus for measuring, recording or otherwise indicating intervals of time, with clock or watch movement or with synchronous motor (excl. clocks of heading 9101 to 9105, time registers and time recorders)
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=bdccfab4-a71c-4f32-8b96-d3d9ed56013c