This is a purely mechanical, traditional classical music box powered by a clockwork spring. It is built with a mechanical music movement and an internal pull string device, while the outer casing is made of high-strength ABS material.

Pull the string to fully wind up the music box spring, then release the string, and the music box will start playing music with the string retracting slowly. Once the spring is fully released, the music stops playing and the string stops retracting at the same time.

This pull string music box comes with multiple practical features. You can make your choice based on the following key factors:

Featuring a double-layer shell structure and ultrasonic welding technology, this pull string music box is available with a professional waterproof function. Plush toys fitted with this waterproof pull string music box are machine washable.

However, we do not recommend washing the music box alone in a washing machine, as tumbling and collision during the washing process may cause structural damage. In addition, the waterproof version will have a slightly increased shell height compared to the standard model.

- The standard-size pull string music box delivers the best cost performance.

- The cost of the mini pull string music box is approximately 50% higher than the standard size.

- Adding the waterproof function will also raise the overall cost by around 20%.

A wide range of melodies are available, including lullabies, classical masterpieces and popular songs.

- Available tunes include Brahms Lullaby, Schubert Lullaby, Swan Lake, The Blue Danube, Jingle Bells, You Are My Sunshine, Hey Jude and more.

Various pull handle options are available to match your design needs. Common styles include coin-shaped handles and loop handles, with material choices covering ABS plastic and natural wood handles.

- The exposed length of the pull string can be customized as required. The regular default length is about 15cm, while the safety standard for some regions is set to 5cm. The specific length should comply with your product design and local safety regulations.

- Custom pull handle designs are also supported.

These are the core reference points for choosing a pull string music box. You can select the ideal model according to your product size, required functions, budget and preferred music tunes.