If you have any questions, please contact customer service and they will help you resolve them.

Features:

• Unique handmade electronic circuit board design
• Colorful LED lights with realistic flickering effects
• USB-powered, plug and play
• It can be used as a keychain or bag charm
• The best gift for Stranger Things fans

TIPS:

1.If the music is unclear, you can press the battery on the back to adjust the battery contact area.

2.There are some small holes on the back of the card, which are used to connect the front and back circuits.