No BatteryHand crank music boxes keep cranking the handle to play the music that doesn't need any battery, the crank is easy to move and kids also can do it easily. Playing the song in a steady but slow pace last about 30 seconds, and then you can repeat it Classical DesignThe delicate surface of this wooden music box uses antique hand carving, and the inside of the wooden box is engraved with "You are my sunshine" - for that special someone who is a ray of light in your life. Give this music box to her/him and let her/him hear your inner voice. Right SizeThe mini music box measures 6.4x5x4.2 cm (2.5x1.96x1.65 inches), the portable and lightweight design allows you to carry it in the palm of your hand, in a small bag, on your bedroom table, and more. Slightly smaller than a credit card in your hand,It fits easily in your pocket. Reliable MaterialThis music box is made of three layers of solid wood pressure-resistant shell and metal movement, the texture and fragrance of the wood can make your music box more textured and delicate, while the metal mechanical movement can support 100,000 times of song playback, sturdy and durable not easy to run and damage. Holiday GiftThis classic special music box with meaningful message engraved inside is perfect gift for wife/kids/boyfriend/girlfriend, perfect for birthday, anniversary, wedding, Mother's Day, Christmas, Father's Day and Valentine's Day.