Blowable led candle - open the birthday greeting card, it will automaticly play the music and light, blow out the candle then the cheers and applause come out. 3D cake pop up then vibrant fireworks sparkle and shine - festive and delicious cake pop up, automatically play 'happy birthday', the fireworks change color and sync with loud music, don't settle for a boring birthday card when you can send one that truly sparkles and shines! Unique 40th 50th 60th 70th Birthday Gifts for Women. Patented design in the usa - made with high quality cardstock, most popular design based on 10000 questionnaires, 245 times visual effects optimization, 300 times electronic component tested. Plenty of space for a heartfelt message - perfect combintion of light & music and handwritten message, it comes with a blank evolope that you can deliver your wishes to loved ones, size - 7'x 7' Durable battery and intricate circuit - withstand 900 times light and music power consumption, the circuit has undergone rigorous testing to guarantee dependable performance.