Uwell Caliburn G4 PRO KOKO Pod System

Uwell Caliburn G4 PRO KOKO Pod System Review

For years, the vaping landscape has been dominated by a singular name that has become synonymous with flavor fidelity and reliability: Uwell. Their Caliburn series didn’t just enter the market; it redefined the expectations of what a portable open pod system could achieve, moving the industry away from lackluster, disposable-style experiences toward rich, nuanced performance that rivals larger, more cumbersome devices. With every iteration, Uwell has carefully studied user feedback and technological advancements to refine their craft, but there comes a moment when refinement turns into revolution. The Caliburn G4 PRO KOKO Pod System represents that exact moment of transformation, serving as a testament to the brand’s relentless pursuit of perfection and innovation. You see folks, it’s a device that acknowledges its heritage through its form factor but looks firmly toward the future with its interface and internal capabilities. This is not merely an update to a beloved classic; it is a complete reimagining of the user experience, designed for the vaper who demands the compactness of a pod system but refuses to sacrifice the technological depth and battery endurance of a box mod.

A Masterpiece of Industrial Design and Aesthetics

The moment you pick this device up, immediately understand how this Uwell Caliburn G4 PRO KOKO Pod System is different from anything that has come before it. For starters, it retains the iconic, classic ‘KOKO square’ shape that countless vapers have come to love for its palm-friendly ergonomics and discreet profile, yet it elevates the concept to a luxury standard. The chassis is constructed from a premium aluminum alloy, a material choice that strikes a brilliant balance between structural integrity and everyday comfort. This aluminum body feels incredibly solid and cool to the touch, conveying a sense of durability that assures you it can withstand the rigors of daily life without weighing you down. Because this pod system is sturdy, compact, and lightweight, it is the quintessential companion for on-the-go vaping, disappearing easily into a pocket or bag yet having enough presence to feel substantial in the hand.

Visually, the device is a stunner. The “G4” sigma logo is prominently yet tastefully displayed at the top front of the device, signaling its place in the lineage of elite hardware. However, the true focal point of the design is the juxtaposition of the matte metal against the cutting-edge technology embedded within it. The large front ultra-shatterproof screen isn’t just a functional component, but a central design element that adds an amazing layer of modern aesthetics. When the screen comes to life, it contrasts beautifully with the industrial metal, creating a pod system that looks as expensive as it feels.

In terms of physical operation, Uwell has streamlined the exterior to maintain a clean, uncluttered look. The system is purely draw-activated, eliminating the need for a firing button on the face of the unit. This design choice prevents accidental firing in the pocket and simplifies the vaping process—you simply inhale to activate. All tuning, menu navigation, and vaping style changes happen through the sophisticated touchscreen interface. There is, however, a discreet side button included, but its function is strictly utilitarian: it serves solely to turn the device ON/OFF. This minimalist approach ensures that the G4 PRO KOKO maintains a sleek, seamless silhouette, free from protruding buttons that could detract from its elegant geometry.

Unprecedented Endurance and Rapid Charging

Beneath the refined aluminum exterior lies a powerhouse of energy that sets a new benchmark for the pod system category. The Uwell Caliburn G4 PRO KOKO Pod System is equipped with a forcefully built-in 2000mAh rechargeable battery. To put this into perspective, this capacity is nearly double what’s found in standard pod devices, effectively bridging the gap between compact pods and internal-battery box mods. This massive energy reservoir allows the device to handle continuous usage without breaking a sweat, supporting wattage levels up to a maximum of 35 watts. For the user, this translates to an exceptional level of freedom. For light users who vape moderately, this battery could potentially last up to 10 days on a single charge, a feat previously unheard of in devices of this stature. Even for heavy Mouth-to-Lung (MTL) users who vape frequently throughout the day, the device offers a reliable 3-4 days of usage. This extended battery life fundamentally changes the relationship between the vaper and their device, removing the “range anxiety” often associated with smaller vapes.

When the time finally comes to replenish the battery, the G4 PRO KOKO ensures that you are not tethered to a wall outlet for long. It utilizes a Type-C charging port conveniently located on the side of the chassis, keeping the bottom flat for standing the device upright. The charging specification is rated at a standard 2.5A, which enables rapid energy transfer. This USB-C fast charging capability is incredibly efficient, capable of bringing the massive 2000mAh battery from empty to a full charge in under 50 minutes. This combination of marathon-level endurance and sprint-speed charging ensures that the device is always ready to perform whenever you need it.

Tailored Performance Thanks to Intelligent Output Modes

Uwell recognizes that vaping is a deeply personal experience and that a single power curve cannot possibly satisfy every preference. Rather than forcing users into a “one-size-fits-all” default setting, Caliburn G4 PRO KOKO Pod System incorporates 3 distinct output modes built directly into its software:

• Storm Mode: As the name suggests, this setting is all about power and immediacy. It delivers a faster ramp-up time, sending a surge of power to the coil the instant you begin your draw. This mode is designed to give an assertive throat sensation and a warmer vape, which is something that many users look for, especially when using lower-resistance coils or stronger nicotine strengths. It mimics the hard-hitting nature of a mechanical mod or a high-wattage tank, providing an intense and satisfying burst of flavor and vapor.
• Waves Mode: For those who prefer a more blissed out and linear experience, offers the perfect solution. This mode focuses on stability, maintaining a smooth and consistent delivery of power from the start of the puff to the finish. It eliminates any spikes in wattage, ensuring that the flavor remains steady and the vapor temperature stays constant. Also ideal for flavor chasers who wanna dissect the subtle notes of their E-Juice without the distraction of intense heat or aggressive throat hit.
• Customize Mode: Unlocking this pod system’s full potential by allowing the user to manually choose the wattage output, thus offering granular control over the vaping experience. Whether dialing it down for a cool, stealthy vape or cranking it up to the 35 watt limit for maximum cloud production, this mode puts the power in your hands, allowing you to tailor the vape to match your liking precisely.

Precision Airflow Control

To further refine the vaping experience, Caliburn G4 PRO KOKO Pod System features a meticulously engineered airflow control system. The slider mechanism is smooth yet resistant enough to hold its position, allowing for transitioning seamlessly between different airflow dynamics. You can restrict the airflow significantly for tight Mouth-to-Lung (MTL) vapes that emphasizes throat hit and flavor concentration. Opening the slider halfway provides a Restricted Direct Lung (RDL) pull, which balances vapor volume with flavor intensity. Fully opening the slider allows for a Direct Lung (DTL) draw, especially when paired with the higher wattage capabilities and lower resistance coils, producing substantial fog and a cooler inhale. This versatility ensures that the G4 PRO KOKO can adapt to your changing preferences throughout the day.

The Touchscreen Revolution

The centerpiece of Caliburn G4 PRO KOKO’s innovation is undoubtedly its interface. Uwell is proud to introduce their first-ever KOKO with a touchscreen designed exclusively for vapers. This isn’t a repurposed smartphone screen or a clunky, slow-to-respond add-on; it is intuitive, responsive, and built for real needs. The 2-inch shatterproof touchscreen display is a technological marvel in a device of this size, providing a canvas that’s both functional and beautiful. The decision to use a shatterproof material is a nod to the practical reality of vaping devices—they are carried in pockets, placed on tables, and occasionally dropped. This durability ensures that the screen remains pristine and functional over the lifespan of the device. The interface itself is designed to banish cluttered menus and confusing button combinations. Core features are accessible with one tap, streamlining the interaction between user and machine. On the main screen, the display serves as a comprehensive dashboard, supplying real-time vaping stats with crystal clarity. Instantly view remaining Battery life percentage, current Wattage setting, active Mode, total puff count, and the resistance (Ω) of the coil currently being utilized.

Advanced Internals and User Interface Features

While many devices rely on a branded chipset to market their capabilities, the Caliburn G4 PRO KOKO takes a different approach, featuring advanced functionalities managed through a sophisticated integration of hardware and software. The operating system on the G4 PRO KOKO adds features that are rarely found in such a small format, elevating the device from a simple nicotine delivery system to a smart gadget. Tasks such as wattage adjustments, puff counter resets, and output mode switching can all be done with quick, responsive screen taps. But Uwell has gone beyond mere utility to include elements of gamification and personalization. The pod system highlights five “blind draw” UI themes, adding a playful, collectible touch to the ownership experience. When you first unbox the device, you start with 2 UI themes unlocked. As you vape more and hit certain puff milestones, you unlock the remaining three themes at 2000, 10,000, and 20,000 puffs. This progression system rewards usage and gives the user something to look forward to, adding a unique layer of engagement.

Furthermore, the unit is designed with a global community in mind. There are eight selectable interface languages including English, Arabic, Spanish, French, Russian, Italian, German, and Indonesian. This inclusivity helps make the device feel ready for an international audience, ensuring that users from around the world can navigate the menus with ease. Practicality is also addressed through screen timeout and brightness adjustments. These settings allow you to optimize the display for either extended battery conservation during long trips or improved outdoor visibility on sunny days, depending on the situation.

A Dual-Platform Pod Ecosystem

A superior open pod system requires a superior delivery method, and Caliburn G4 PRO KOKO excels by supporting two distinct pod platforms. Both pod lines are backed by Uwell’s proprietary U² Anti-Leak Technology, a dual-layer protection system designed to minimize mess during carry and use. All compatible pods have integrated coils, simplifying the maintenance process by eliminating the need for messy coil changes.

Caliburn GPP Pods are sophisticated 3mL cartridges that’re currently available in a comprehensive range of resistances including 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω. This spectrum covers the entire range of vaping styles, from airy DTL and RDTL draws to tight, restricted MTL uses. Pods connect magnetically to the device with a satisfying click and feature a convenient side-fill system. This filling port provides enough room for thicker vape juices, allowing users to refill without struggling with air bubbles or spillage. Constructed from transparent, high-quality PCTG material using ultrasonic welding, these pods are incredibly durable and leak-resistant. The clear plastic mouthpiece is ergonomically shaped, making every draw a sensational one to take. However, the true magic lies inside. At the heart of any GPP Pod’s remarkable performance lies Uwell’s exclusive PRO-FOCS 4.0 coil optimization technology. This upgraded system is the powerhouse behind the significant leap in flavor intensity and pod endurance. It works by meticulously controlling the heating temperature and restoring the E-Juice flavor to its original profile. Pulls are saturated with pure, nuanced taste, whether you’d prefer a robust, layered character of freebase vape juices or the smooth, high-nicotine satisfaction of nicotine salts. The advanced internal engineering of this pod, coupled with PRO-FOCS 4.0, ensures that your E-Liquid is vaporized efficiently and evenly, unlocking its full flavor potential while extending the operational life of the pod far beyond previous iterations.

In a move that champions versatility and backward compatibility, the system is also compatible with Caliburn G3 Pods. These 2.5mL pods come in 0.6Ω and 0.9Ω mesh resistances. Like the GPP series, these transparent, PCTG-constructed pods are made using ultrasonic welding and feature the same clear, comfortable mouthpiece. They have already proven themselves in earlier Uwell models, known for their reliability and performance. This compatibility means that users with existing G3 gear can switch over to the new G4 PRO KOKO without buying entirely new pod packs. They too utilize Uwell’s exclusive PRO-FOCS 4.0 coil optimization technology, guaranteeing that regardless of which pod style you choose, the flavor experience remains world-class.

Features & Specs:

• Dimensions: 85.8mm × 50mm × 23mm
• Net Weight: 93g
• Built-in Battery Capacity: 2000mAh (up to 10 days for light users, 3-4 days for heavy MTL users)
• Charging Current: Type-C; 2.5A
• Maximum Wattage: 35W
• Resistance Range 0.4Ω-1.2Ω
• Modes: STORM/WAVES/CUSTOMIZE
• Display Size & Type: 2″ Shatterproof Touchscreen
• Activation: Auto-Draw (with a side button to turn the device on)—all functions are done via the touchscreen.
• Airflow: Stepless
• Chassis Material: Aluminum Alloy
• Available Colors: Coral Pink | Cosmic Gray | Crystal White | Desert Gold  | Glass Blue  | Light Green | Mirror Silver | Waves Black
• Device’s Pod Compatibility: Caliburn GPP Pods and Caliburn G3 Pods
• Pods Volume: 3mL (GPP Pod) / 2.5mL (G3 Pod)
• Pods Materials: PCTG
• Pods Viewing Window: Clear/Transparent
• Pods Connection: Magnetic
• Pods Filling System: Side-Fil
• Pods Coil Resistances: GPP Pods: 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω / G3 Pods: 0.6Ω and 0.9Ω
• Pods Coil Material: Stainless-Steel
• Pods Coil Design: GPP Pods: Regular / G3 Pods: Mesh
• Pods Mouthpiece: Wide Plastic Mouthpiece
• PRO-FOCS 4.0
• Proprietary U² Anti-Leak Technology
• Ultrasonic Welding
• 5 Random UIs Available
• Name Your Vape / 8 Language Options / Brightness Control / Screen Timeout / Animations
• Compact, Portable, Extremely Lightweight, and Travel-Friendly

Package Contents Include:

• 1 × Uwell Caliburn G4 PRO KOKO Pod System
• 1 × Caliburn GPP 0.4Ω Pod
• 1 × Caliburn GPP 0.6Ω Pod
• 1 × User Manual

Advanced User Item. Use at Your Own Risk!