clever Design Idea: This cute pop-up card features an exciting unique 3D design with a fun blow-out action twinkling lights and features Happy Birthday to celebrate a birthday party theme An unforgettable gift to keep as a keepsake How to Play the Happy Birthday Song: When you open the birthday card the candles on the cake will light up you can imagine blowing the candle like blowing on the right side of the candle the card is playing happy birthday song Notice (where you BLOW your air is marked BLOW HERE) irst choice Birthday gift: Our cards for children parents brothers sisters husbands wives boyfriends girlfriends colleagues are the best birthday gift first choice so that they can all share this full of happiness birthday gift Suitable for ages 5-100 Unique Appearance Design: The cover is a metallic yellow with a delicate laser cut fun design that hints at whats inside the card classic luxury envelopes that are sealable for easy mailing rofessional After-Sales Service: 24-hour special reply if you have any problems with greeting cards you can timely contact us YIXIN our greeting cards may be in transit may have damage (or music lighting blowing work can have problems) can also contact us to apply for a replacement or refund