3D Fireworks Cake Birthday Card: When you open the birthday card, the 3D cake appears, then a lively fireworks sparkle and shine, which automatically plays "Happy Birthday", 3 fireworks change color and synchronize with loud music.Patented Design in USA: Made of high quality cardboard, most popular design based on 10000 questionnaires, visual effects optimization 245 times, electronic components testing 300 times, research and improve the top 100 products.Suitable for all ages: Our 3D greeting cards are suitable for 16, 18, 30, 40, 50, 60, 70, 80 years and are an unforgettable birthday gift that is sure to make your special person feel loved.Great happy birthday card for mom, dad, husband, wife, sister, or any other special person.High-quality card with envelope: The greeting cards are made of thick, environmentally friendly paper and impress with their bright colors.Each card measures 20x15cm and comes with a white envelope for easy gifting or mailing.Our card offers plenty of space for your personal message, making it a very special way to show your loved ones your feelings.Long-lasting battery and sophisticated circuit: The circuit has undergone rigorous testing to ensure reliable performance.The birthday card is designed to be the perfect combination of audio and lighting technology, adding a touch of luxury and magic to your birthday greeting.