[Geek Must-Have] 4000mAh Dual-Mode Armor—A 3D-Printed Bluetooth Speaker That Doubles as a Power Bank

Listen to Music and Charge Simultaneously: Built-in 4000mAh high-capacity lithium battery provides up to 12 hours of playtime, supports Type-C fast charging, and can even function as an emergency power bank to keep your phone alive!
✅ 3D Printing for Customization: Modular shell STL files (compatible with most printers) are provided, supporting DIY hollow textures and gradient color schemes to create your own unique technological artwork.
✅ HiFi-Grade Sound Quality: Equipped with a 2-inch full-range speaker and a professional amplifier board, delivering a balanced three-frequency response and a powerful soundscape from a compact design.
✅ Minimalist Assembly: The parts list is precise down to the screw type (with open-source diagrams), allowing even beginners to complete assembly within 2 hours and experience the joy of creating from 'code to finished product'!

🛠️ Technical Specifications:

• Power Supply: Lithium battery (4000mAh total capacity)
• Output: 5V/2.1A USB-A port, compatible with phones/tablets
• Connectivity: Bluetooth 5.0 for stable transmission, 10-meter range with no delay
• Structure: Sealed enclosure

🌟 Why Choose This?

• Open-Source Spirit: 3D model and circuit diagram provided free of charge, supporting modifications and upgrades (add RGB lighting? Wireless charging? It's up to you!)
• Desktop Aesthetics: A geometrically cut design that's both a speaker and a cyberpunk desktop accessory.
• Environmental Pioneer: Say goodbye to disposable plastic casings and embrace sustainable technology with printable, biodegradable materials!

📥 Download Now and Unlock Your 'Sound Charging Station'
Files Included: STL printable model, BOM parts list, STEP solid format
Compatible Models: Printable with most mainstream 3D printers, including Bambu A1 mini