Cool Music has made a strong entry into the smart micro-investment market, standing out with its innovative product quality and exceptional user experience. In less than a month, it launched successfully, positioning itself as a powerful force in the industry, ready to reshape the landscape of smart micro-projectors. The R4 model is at the heart of this revolution, offering a stunning visual experience that sets new standards.
With a 1920*1080P physical resolution and an impressive 880 ANSI lumens brightness, the R4 delivers crystal-clear images and vibrant colors. Thanks to Cora's advanced optical technology, the visuals are not only sharp but also rich in detail, bringing every scene to life with unmatched realism.

In the world of Cool Music, color accuracy and image authenticity are top priorities. The R4 series is designed to deliver "Full HD Universal" and "Real Vision," setting a new benchmark for smart micro-projectors. It’s no wonder that this latest innovation has sparked a new wave of excitement among users.

The R4’s ultimate realism starts with its groundbreaking lens design. This time, Cool Music partnered with renowned optical expert Ma Yongzhen, whose career has been dedicated to using pure light to restore the essence of reality. His collaboration with Cool Music has led to a revolutionary approach in optical engineering.

Ma Yongzhen, previously a senior optical engineer at China National Optical Group, has worked on numerous high-end projectors and film equipment. As a pioneer in optical research, he brought his expertise to the R4, focusing on solving key issues such as thermal defocusing and image distortion.



At the core of the R4’s lens system is a heat-resistant all-glass design, consisting of seven precision-processed lenses. Each element is manually polished to ensure optimal light transmission and minimal distortion. Compared to resin-based lenses, the R4 offers superior clarity and stability, eliminating common issues like blurriness or loss of focus during operation.
Additionally, the lens features a precision-milled all-metal barrel, enhancing durability and reducing the need for frequent refocusing. This design also minimizes light scattering, ensuring that every beam of light contributes to a sharper, more vivid image.

The R4’s short-throw lens allows for a 1.2:1 throw ratio, enabling a 100-inch screen to be displayed from just 2.53 meters away. This makes it ideal for small spaces, without compromising on image size or quality. The collaboration between Cool Music and Ma Yongzhen has set a new standard in projector design, and we can expect to see similar innovations in future products.

Beyond the lens, the R4 also excels in its light source and optical channel. Equipped with an 8A high-current LED, it delivers high brightness and efficiency. The new RGGB four-channel design enhances color accuracy and richness, making the image more vivid and true-to-life. With 880 ANSI lumens, the R4 outperforms many traditional projectors, delivering a brightness level that surpasses 1000 lumens.
To further enhance realism, the R4 incorporates 11 advanced image optimization technologies. HDR support expands the color range, deepening contrast and restoring natural details. The result is a viewing experience that feels almost lifelike.

The R4 series represents the pinnacle of Cool Music’s optical engineering, combining high-definition, clarity, realism, and rich color performance. It’s a masterpiece in the world of smart micro-investment, and it’s no surprise that it has become a dream for many users seeking the best image quality.
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