Samsung 55-Inch Class OLED 4K S85D Series HDR Smart TV w/Dolby Atmos, Object Tracking Sound Lite, Contour Design, Motion Xcelerator, Real Depth Enhancer, Alexa Built-in (QN55S85D, 2024 Model)

😲😲This tourbillon DIY model accurately reproduces the core structure of the spring and gears. ✨✨From scattered parts to assembly, you can immerse yourself in the wonder of mechanical engagement and intuitively understand the principle of the tourbillon to offset gravity and calibrate the travel time. Hold the charm of precision machinery in your palms and play with your fingertips!❤️❤️ | Moderobot.com