Crib Mobile Motor, Baby Music Box with 3 Modes (Rotation & Music, Rotation Only, Music Only) Volume Control, 12 Lullabies, Portable Baby Sleep Sound Machine, 30 Minute Auto Shut-off, Battery Operated 【3 Modes】The crib mobile music box is different from other motors. It has 3 modes, rotation only and music only. Rotation and music simultaneously. UNIQUE in the market. 【Portable Baby Sleep Machine】With a diameter of only 3.4 inches and a weight of 3.6 ounces, the motor easily fits into a diaper bag or backpack. 【Arbitrary Volume】The traditional baby music box only has 3 levels of volume options. FEISIKE crib mobile motor adopts continuous volume, you can choose the most suitable volume from 0 to 100. Say goodbye to the traditional mobile music box. 【Soft Music】Includes 12 lullabies of pure music, which compared to white noise, helps babies relax and fall asleep faster. 【User-Friendly Design】Automatic shut-off after 30 minutes. 【Compatibility】Suitable for most mobile crib hangers, mobile crib arms. 2 AA batteries required, not included.