In the fiercely competitive world of pod vapes, few names command as much respect as Uwell’s Caliburn series. For years, it has been the benchmark for reliability, flavor, and user-friendly design. Now, Uwell has merged two of its most popular lines—the sleek Caliburn G4 and the compact, iconic Koko—into a single, powerful package. The Caliburn G4 Pro Koko Pod System Kit isn’t just an iteration; it’s a statement. It represents the culmination of years of innovation, offering unparalleled adaptability in a stunning, dual-form-factor design.
This device is engineered for vapers who refuse to compromise, providing the option to switch between a sleek pen-style device or a robust, pocket-friendly square format depending on your mood and needs. Let’s dive into what makes this kit so exceptional.
Features:
1. 2000mAh Long-Lasting Battery – Up to 10 days of non-stop vaping on a single charge.
2. 2.0-Inch Touchscreen – Uwell’s first Koko device with an intuitive and responsive display.
3. 5 Blind-Draw UI Themes – Unlock unique themes through an interactive card game.
4. Three Output Modes – Storm Mode for instant throat hit, Waves Mode for smooth flavor, Custom Mode for tailored performance.
5. Smart Settings – 8 language options, adjustable brightness, animations, battery saver, and system reset.
6. Personalized Experience – Creative naming and clean UI customization.
7. Upgraded GPP Cartridges – Compatible with both G4 Pro Koko and G3 series, 2.5ml top-fill pods with ergonomic mouthpiece.
8. U² Anti-Leak Technology – Mess-free refilling and enhanced durability.
9. Compact & Ergonomic Design – Minimal bezels with a curved body for superb hand feel.
Brand: Uwell
Battery Capacity: 2000mAh (built-in)
Output Power: Max 35W
Screen: 2.0-inch HD Touchscreen
Pod Capacity:3ml (CALIBURN GPP cartridge)
Compatible Pod: GPP series Top Filling & Side filling (0.4ohm, 0.6ohm, 0.9ohm, 1.2ohm)
Charging Port: Type-C, 5V/2A
Airflow: Stepless adjustable airflow system
Materials: Aluminum alloy & PCTG
First Impressions: Two Styles in One Premium Kit
The most immediate and striking feature of this kit is what’s in the box: two separate battery devices.
-
The Caliburn G4 Pro Device: A sleek, modern pen-style (stick) device with a streamlined form factor and a vibrant, full-color display screen.
-
The Koko Device: A compact, credit-card-friendly square device that prioritizes ultimate portability and discretion.
This “Pro” level offering means you are no longer forced to choose. You get the best of both worlds: the advanced features and screen of the G4 Pro and the minimalist, ultra-portable design of the Koko. Both devices share the same groundbreaking pods and coils, ensuring a consistent experience no matter which body you use.
Engineering Excellence: Power and Intelligence
Uwell has packed a significant amount of technology into both devices, particularly the G4 Pro.
-
Advanced Display Screen (G4 Pro): The G4 Pro device features a crisp 2 inch OLED screen that provides at-a-glance information on battery life, current wattage output, puff counter, and coil resistance. This level of transparency and control is typically found in advanced box mods, not pod systems.
-
Smart Adjustable Power: Both devices are powered by a robust 2000mAh battery (a massive capacity for a pod of this size), but the G4 Pro allows you to adjust the wattage from 12W up to 18W. This lets you fine-tune your vapor production and flavor intensity to match your preferred e-liquid and coil.
-
Adaptive Output & Tech: Uwell’s proprietary PRO-FOCS flavor testing technology is integrated to ensure the coil and device work in perfect harmony for optimal flavor reproduction. Features like auto-draw activation, a 3-second fire lock, and short-circuit protection make it both intelligent and safe.

The Heart of the System: G4 Pods and Coils
The true magic of any Caliburn device lies in its pods, and the G4 series continues this legacy.
-
Pod Design: The transparent G4 pods have a 2.5ml capacity and feature a convenient top-fill design with a self-sealing silicone plug, making refills clean and effortless. They attach magnetically and securely to either device.
-
Caliburn G Coil Platform: The pods utilize the renowned Caliburn G Series replaceable coils. This means you don’t throw away the entire pod; you simply pop in a new coil, making it more economical and environmentally friendly. The kit includes two excellent options:
-
0.6Ω Meshed-H Coil: Designed for a Restricted Direct Lung (RDL) draw. It produces warmer vapor, denser clouds, and more intense flavor, ideal for lower-nicotine freebase e-liquids (e.g., 3mg-6mg).
-
0.8Ω Regular Coil: The classic Caliburn experience. Optimized for a smooth Mouth-to-Lung (MTL) draw, providing a tighter, cigarette-like hit. Perfect for higher-strength nicotine salts (e.g., 20mg-35mg).
-
-
Adjustable Airflow: The pod itself features a clever sliding airflow control mechanism. You can seamlessly switch from a tight, restricted MTL draw to a loose, airy RDL draw to match your chosen coil and e-liquid perfectly.

Performance and Flavor: Unmatched Consistency
Where the Caliburn G4 Pro Koko truly shines is in its performance.
-
Flavor Production: The combination of the meshed coils and Uwell’s focus on flavor technology delivers exceptionally crisp, rich, and nuanced flavor. It consistently outperforms most competitors in its category.
-
Versatility: This is arguably the most versatile pod kit on the market. Whether you’re a former smoker needing a tight MTL hit with strong nicotine salts or a cloud chaser wanting a warm RDL vape with freebase liquid, this single system accommodates both perfectly.
-
Battery Life: The 850mAh battery is a standout feature. It easily lasts a full day, even for moderate to heavy vapers, and the USB-C charging ensures quick top-ups.
Target Audience: Who Is This Kit For?
-
The Indecisive Vaper: Can’t decide between a stick or a square pod? This kit eliminates the need to choose.
-
The Flavor Chaser: Anyone who prioritizes pure, clean flavor above all else will find a loyal companion in this device.
-
The Tech-Savvy User: The vaper who appreciates data and control will love the OLED screen and wattage adjustment on the G4 Pro.
-
The Practical User: The minimalist who values portability and simplicity above a screen can use the Koko device as their daily driver.
-
New and Experienced Vapers: Its simplicity makes it easy for beginners, while its advanced features keep experienced vapers engaged.

Final Verdict: The Ultimate Pod Kit, Redefined
Uwell Caliburn G4 Pro Koko Pod System Kit is more than just a product; it’s a flagship experience. By offering two distinct form factors in one package, Uwell has demonstrated a deep understanding of its diverse audience. You get the power and customization of the G4 Pro and the sheer portability of the Koko, all sharing the same legendary flavor-producing pods.








