Sound Bag 1.Open the bag to play nice music 2. ... open the bag, it play the nice music2. Material: 250g white paper, sound module3. Surface decorative finishing: spot UV, varnish, glitter, embossing ... , creasing, foil stamping, shape-mold cutting4. Sound Length: 3 to 270 seconds5. Sound Format: MP3 or WAV format6. Battery: AG13 X ...