... of Xmas greeting cards with sound modules 1. Application in birthday cards, mother’s day cards, Christmas cards, valentine’s day cards, thanksgiving day cards2 ... : pull-tab switch, button switch, light sensor4. Main component: paper card, sound module5. Card size: A5, A4 or customized6 ... . Paper card weight: 200g, 250g, 300g, 350g7. Card design: artworks8 ...