Feature:1. Self Playing Music: 3D popup greeting cards come with their own music, songs to make you feel the Christmas ambiance.2. Openwork Engraving: 3D christmas cards are made with openwork engraving, full of texture, unique three dimensional structure and exquisite shape.3. 3D Popup Design: The Christmas cards are made of 3D paper engraving, laser cutting and stamping technology, which can be easily folded up to bring unexpected surprises when you open the cards and stand up.4. Wonderful Wishes: The back can be written, you can write the best wishes and love, is the best way to let your favorite people know how much you love them.5. Express Your Feelings: Christmas cards express your care and blessings to your family and friends, easily share the holiday happy with your friends and family.Specification:Item Type: 3D Christmas CardsMaterial: PVC, CardboardBattery Type: Button Battery (Ship with Inbuilt Battery)Battery Model: LR1130Battery Capacity: 70mahSize: Approx. 10 x 9cm / 3.9 x 3.5in.Package List:1 x 3D Greeting Card1 x Paperboard