Mother's Day Endless Mum, Mummy, Mamma --- This greeting card is not an ordinary greeting card, it is full of surprises, and it will definitely make your mom unforgettable.Joker Greeting Prank Card --- Once opened, the card will start playing a very loud and annoying \\song\\ The nagging loops non-stop (3+hours), opened or closed, until the battery dies + glitter inside if/when she rips it apart, Then the fun ends.Greeting Card Size --- The Mother's Day card measures 10.5 x 14 cm(4.1 x 5.5 inches) and comes with a matching envelope. Printed on high-quality paper. You can write your blessings and signatures on the card.Perfect Mother's Day Gift --- With a unique design and sweet emotion, this card is the perfect way to celebrate a great mom and a great companion for Mother's Day gifts.Kind Tips --- Keep batteries out of reach of children. Batteries can cause severe or fatal injuries in 2 hours or less if swallowed or placed inside any part of the body, including chemical burns and potential perforation of the esophagus.