Auto-play music light 3D birthday card. The inside of of this birthday card displays a beautiful 3D cake design with warm bright light while auto playing the melodic treat "Happy Birthday song" that’s sure to bring a smile to any birthday celebration for her or for him..Perfect birthday gifts kit. There are warm birthday card and matching envelope. No need to buy other accessories. Warm birthday gifts for her or him, your kids, mom, son, daughter or parents..Made of paper materials. The birthday greeting card made of sturdy paper and laser cutting to create a beautiful 3D scene with a highly detailed design. An unforgettable birthday gift to keep as a keepsake..Write your birthday greeting inside. Product Dimensions: 5.9 x 5.9 inches. There's plenty of space to write your own personalized wishes and greetings that wishes them a Happy Birthday..Different from other music cards our Birthday card is auto-play music and light up. When they open the birthday card, it will automatically play lights and music. Will surely give your friends a surprise.