Soothing, battery-free music arm that helps babies fall asleep and supports early listening development. Key benefits and features Gentle, light music: A mechanical music box produces soft melodies to help babies settle and fall asleep without electronic noise. Battery-free safety and reliability: The mechanical mechanism runs without batteries, reducing maintenance and potential battery-related hazards. Supports early development: Regular music exposure can promote listening skills, language and literacy foundations, creativity, and coordination. Customizable toy hanging: Accepts a variety of hangable dolls and small soft toys (dolls not included) so you can attach characters your child likes — for example, Barbie-style dolls, cartoon animals, or superhero figures. Space-saving, easy to use design: The arm is designed to save space and to be easy to install, remove, and move as needed. Functional attributes Function: Plays light, mechanical music; provides a hanging point for dolls or soft toys. Compatibility: Works with most small, hangable dolls and soft toys (items not included). Examples include Barbie-sized figures, plush animals, and similar toys. Size and fit: Designed as a compact, space-saving arm for use in the nursery; easy to position without taking up extra room. Material and maintenance: Mechanical music box operation avoids batteries and electronic components; simple to maintain due to its manual mechanism. Performance: Delivers consistent, gentle music through a mechanical winding mechanism and serves as a stable attachment point for hanging toys. Practical use scenarios Bedtime routine: Wind the mechanical music box and hang a familiar doll above the crib to create a consistent, calming cue for sleep. Naptime and room transitions: Move the compact arm between rooms or positions to keep the same soothing music and familiar toy nearby during naps or room changes. Personalized play-and-rest setup: Attach different dolls or soft toys to match your child’s current interests, switching characters to encourage engagement while still using the same music and mount. Notes Dolls and hanging toys are not included and should be chosen to match the hanging attachment size. The product’s arm is designed for space-saving installation and easy movement; follow included instructions for safe attachment and use.