With the rapid growth of the smart micro-projector market, we once again experience the magic of technology, allowing us to enjoy an immersive cinematic experience right from the comfort of our homes. While the mainstream in this market still remains 720P, Cool LeTV has taken a bold step forward by launching the S3 smart projector with over 1,000 lumens, making it possible to watch clear projections even during the day. Now, the brand is back with a new generation: the R4 1080P flagship smart projector. This model not only upgrades resolution, brightness, and audio quality but also features a more modern, three-dimensional design. Most impressively, it’s priced around 3,000 yuan—significantly lowering the bar for high-end 1080P projectors. How does it perform? Let’s dive in!
Cool Music, as the brand is known, has long been a favorite among tech-savvy consumers due to its “price butcher†strategy, offering top-tier performance at budget-friendly prices. The R4 continues this tradition, bringing 1080P resolution and advanced features to a price range that was once reserved for premium models costing 5,000–6,000 yuan.
The packaging of the R4 follows a sleek black box design with a simple, elegant logo. Inside, the device is well-protected with sponge compartments, ensuring safe delivery. Alongside the projector, you’ll find a power adapter, remote control, user manual, and warranty card. Notably, the power adapter (15V-6.6A) is not compatible with previous models like the S3, indicating a significant hardware upgrade.
Visually, the R4 is a standout. Its design is more dynamic than the S3, featuring a cube-like structure and all-metal elements. Available in black and white with red accents, it looks both stylish and modern. Details like the metal lens cap, leather strap (upgraded to leather on the R4S), and adjustable rubber feet add to its premium feel. Placed in a living room, the R4 looks like a piece of art.
The R4 measures 16.5 x 11.6 x 14.1 cm, with rounded edges and a red border surrounding the dual speaker grilles. The left-right separated speaker design enhances sound quality, and the HIFI logo on the grille hints at its audio capabilities. This isn’t just a projector—it’s a two-channel HIFI audio system designed for true stereo sound, rivaling cinema-grade surround systems.
On the front, a slide-protected HD lens houses a 7-piece all-glass telecentric lens and a precision-milled metal barrel. The R4 offers 1080P resolution and optimized optical path design, delivering a full HD projection experience. Additionally, the lens cover allows users to switch between projection and Wi-Fi speaker modes, adding a unique and versatile feature.
The interface is located on the back, hidden under a cover. It includes two USB ports, one HDMI 2.0 port, AV, 3.5mm audio, and digital coaxial output. The cooling grille beneath ensures efficient heat dissipation. The R4 also brings back physical buttons for control, addressing a common pain point in many smart projectors. A five-way navigation key, menu, and back button allow for seamless operation, even when the remote is out of reach.
The top of the unit features a leather handle, making it easier to move around. The bottom has four adjustable feet, supporting trapezoidal correction to adapt to different environments. Powering up the R4, the system boots quickly thanks to a 64-bit Mstar chip, 1GB RAM, and 16GB storage, ensuring smooth and stable performance.
In terms of brightness, the R4 reaches 800 ANSI lumens, making it ideal for daytime viewing. When projected onto a 100-inch screen, the image remains sharp and clear. The Cool OS, developed by Cool LeTV, is based on Android with deep customization for better usability. Its clean UI, inspired by the "Jane" design concept, makes navigation intuitive and user-friendly.
Content-wise, the R4 partners with iQIYI and Galaxy GITV, offering a vast library of videos, music, and games. It also supports HIFI music streaming and third-party apps via USB, giving users more flexibility. With 3D playback support and active shutter glasses, the R4 delivers an immersive 3D experience.
Whether for entertainment, work, or gaming, the R4 is a versatile device. It supports office documents, connects to computers via HDMI, and even plays games directly from the projector. All in all, the R4 redefines what a smart projector can be—combining style, performance, and affordability in one package.
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