1. Introduction
Thank you for choosing the Wonder Moon Sanrio Music Box Building Blocks. This set allows you to construct a beautiful, illuminated music box featuring beloved Sanrio characters, Hello Kitty or Little Twin Stars. This manual provides detailed instructions for assembly, operation, and maintenance to ensure a delightful experience.
2. Important Safety Warnings
⚠ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- This product contains small parts and is not suitable for children under 3 years old due to choking hazards.
- Recommended age for assembly and use is 14+ years, or 18+ years for advanced builders.
- Keep away from open flames or high heat sources.
- Do not ingest any parts of the product.
- Ensure batteries are inserted correctly according to polarity markings.
- Dispose of used batteries responsibly.
3. Package Contents
Please check the package to ensure all components are present:
- Assorted Building Blocks (for chosen character: Hello Kitty or Little Twin Stars)
- Instruction Manual
- Decorative Stickers
- Light String/LED Components
- Music Box Mechanism
- Character Figures
4. Specifications
| Feature | Detail |
|---|---|
| Material | Plastic |
| Block Size | Small building block (Compatible with Lego) |
| Power Source | Button Battery (for lighting) |
| Recommended Age | 14+ years, 18+ years |
| Origin | Mainland China |
| Hello Kitty Version Dimensions (Approx.) | Height: 220mm, Width: 110mm |
| Little Twin Stars Version Dimensions (Approx.) | Height: 205mm, Width: 110mm |
| Package Weight (Approx.) | 0.6 kg |
| Package Dimensions (Approx.) | 10cm x 10cm x 10cm |
Product Variants:
- Hello Kitty Music Box: Features Hello Kitty characters, a castle, and a moon light.
- Little Twin Stars Music Box: Features Little Twin Stars characters and a moon light.

Figure 1: Hello Kitty Music Box highlighting features like the moon light, ambient light strip, and rotating music box.

Figure 2: Hello Kitty Music Box with approximate dimensions (220mm height, 110mm width).

Figure 3: Little Twin Stars Music Box with approximate dimensions (205mm height, 110mm width).
5. Assembly and Setup
Follow these steps carefully to assemble your music box building blocks. Refer to the included instruction manual for detailed diagrams.
Video 1: Assembly demonstration for the Hello Kitty Music Box Building Blocks, showing unboxing, sorting, construction, and final decoration.
- Unpack and Sort: Carefully open the packaging and sort all the building blocks by color, shape, or size as indicated in your instruction manual. This will make the assembly process smoother.
- Assemble Small Decorative Elements: Begin by constructing the smaller decorative pieces, such as the flowers and foliage, as shown in the manual.
- Construct the Main Structure: Follow the step-by-step diagrams to build the core structure of the music box, including the castle (for Hello Kitty version) and the moon element.
- Integrate Lighting: As you build, carefully integrate the LED light string into the designated areas. Ensure the wires are not pinched or damaged.
- Attach Character Figures: Once the main structure is complete, securely attach the Hello Kitty or Little Twin Stars figures to their respective positions.
- Decorate the Base: Apply the provided decorative stickers to the music box base to personalize your creation.
- Final Check: Ensure all blocks are securely connected and the light string is properly installed.
6. Operating Instructions
Your Sanrio Music Box Building Blocks feature both a musical mechanism and an interactive lighting system.
6.1 Music Box Operation
To play music, gently wind the music box mechanism located on the base of the assembled model. The music will play for a short duration. Do not overwind the mechanism.
6.2 Lighting Operation
The moon element on your music box is equipped with a touch-sensitive light. To turn the light on or off, gently tap the moon. The light will illuminate the assembled structure, creating an ambient glow.

Figure 4: Assembled Hello Kitty Music Box with its lights illuminated.
7. Maintenance
- Cleaning: Use a soft, dry cloth to gently wipe dust from the assembled model. Do not use harsh chemicals or abrasive cleaners.
- Battery Replacement: If the lights dim or stop working, replace the button battery located in the base of the unit. Refer to the instruction manual for specific battery type and replacement procedure. Ensure correct polarity.
- Storage: Store the music box in a cool, dry place away from direct sunlight to prevent discoloration or damage to the plastic components.
8. Troubleshooting
8.1 Lights Not Working
- Check if the battery is correctly installed with the correct polarity.
- Replace the battery with a new one.
- Ensure the moon element is being tapped gently but firmly.
- Verify that the light string connections are secure within the blocks.
8.2 Music Not Playing
- Ensure the music box mechanism has been wound.
- Do not force the winding mechanism if it feels stiff.
If you encounter any persistent issues not covered here, please refer to the support section.
9. User Tips
- Organize Blocks: Before starting assembly, sort the blocks into small containers or trays to easily find the pieces you need.
- Follow Instructions Closely: The instruction manual provides detailed visual guides. Pay close attention to the step-by-step diagrams for optimal assembly.
- Gentle Handling: Apply gentle pressure when connecting blocks to avoid damaging them.
- Enjoy the Process: Building block sets are designed for enjoyment. Take your time and appreciate the intricate details as your music box comes to life.
10. Warranty and Support
For any questions, concerns, or support regarding your Wonder Moon Sanrio Music Box Building Blocks, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase for any warranty claims.





