* Switch on/off button: Press once to play music, press again to pause. Motor rotates when music plays and stops when paused. * Mode button: Switch between 12 built-in songs. Press the button to select the next song; music plays automatically when powered on. * Volume selection button: Two buttons with identical function. Each press cycles through high, medium, and low volume levels. [Arbitrary volume] Unlike traditional baby music boxes with limited volume settings, this crib mobile motor offers stepless volume control from 0 to 100, allowing you to choose the ideal sound level. [Soft music] Features 12 soothing lullabies that can be switched freely. Play one song at a time. Select your baby's favorite melody for a peaceful sleep. [User-friendly design] Automatically shuts down after 30 minutes to conserve power. [Compatibility] Fits most crib mobile hangers and arms. Requires 2 AA batteries (not included). Color: White Material: ABS Size: 14 x 9 x 35 cm Package Contents: 1 x Music box Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.