In the fast-evolving world of pod systems, few devices balance compact design and powerful performance as gracefully as the Uwell Caliburn G4 Mini. This sleek device redefines what a pocket-friendly vape can do. It is built for vapers who demand quality flavour, convenience, and an elegant aesthetic all in one lightweight body.
Let’s explore every detail of this impressive kit — from design and flavour performance to technology, compatibility, and real-world usability.
A Compact Design That Speaks Style
The Uwell Caliburn G4 Mini is a perfect blend of portability and refinement. The design focuses on keeping things simple without compromising the premium touch that Uwell is known for.
Its dimensions measure approximately 112.7 mm × 24.1 mm × 14 mm, giving it a slender and ergonomic profile that fits comfortably in your hand or pocket. The body weighs only about 46 grams, making it incredibly easy to carry around. Despite being feather-light, it feels sturdy and well-built, thanks to the durable PC + PCTG materials used in its construction.
The finish has a soft metallic sheen with a refined texture that resists fingerprints and scratches. Every angle feels intentional — minimal, but modern. It’s the kind of design that appeals to both new users and experienced vapers looking for a sleek backup device.
Draw-Activated Simplicity
No buttons. No screens. No complex menu system. The Caliburn G4 Mini keeps vaping straightforward with its draw-activated mechanism. Simply inhale to activate the device — that’s it. This design removes any learning curve, making it incredibly user-friendly, especially for beginners.
At the same time, advanced users will appreciate the consistency of each draw. The automatic power adjustment and smart chipset work seamlessly to provide even vapour output and stable performance. There’s no need to fiddle with wattage settings; the device does all the work in the background.
Compact Yet Capable Battery
Small size doesn’t mean small power. Inside this slim chassis lies a 1100 mAh built-in battery — impressive for a mini device. The battery capacity ensures extended vaping throughout the day for moderate users. It supports a maximum output of 35 watts, giving you enough power to enjoy both mouth-to-lung (MTL) and restricted direct lung (RDL) draws.
Charging is handled by a USB Type-C port, ensuring fast and efficient recharging. Within a short time, the battery replenishes and gets you back to vaping. The charging port sits conveniently at the base, and the LED indicator keeps you informed about battery status.
Battery performance remains consistent even at low charge levels. There’s no sudden drop in vapour quality — every puff feels balanced from start to finish.
Advanced Flavour Engineering with PRO-FOCS 4.0
Flavour quality defines a pod kit, and this is where the Uwell Caliburn G4 Mini shines. The device incorporates Uwell’s PRO-FOCS 4.0 flavour technology, which focuses on maximizing e-liquid taste accuracy and prolonging coil lifespan.
According to Uwell’s internal testing, this upgraded system offers up to 35% richer flavour delivery and 35% longer pod durability compared to previous generations. This improvement ensures that every draw captures the true essence of your e-liquid — from fruity sweetness to creamy undertones or menthol chills.
The flavour is crisp, the vapour smooth, and the throat hit balanced. Whether you’re using nic salts or regular e-liquid, the Caliburn G4 Mini consistently produces a satisfying experience without dry hits or flavour fading.
Upgraded Pods and Leak-Resistance
The device uses the newly designed Caliburn GPP Pods, a major advancement in Uwell’s pod technology. These pods are built using U² anti-leak structure, a combination of ultrasonic welding and a U-shaped channel design. This structure prevents condensation buildup and leakage — two of the most common problems in pod systems.
The GPP Pods feature a side-fill system that makes refilling simple and mess-free. Just remove the silicone plug, fill up to the maximum line, and close it securely. Each pod can hold 3 mL of e-liquid (or 2 mL in regions with TPD restrictions).
The included 0.6 Ω coil inside the pod produces excellent vapour density and warm flavour notes, ideal for RDL vaping. Other resistances are available separately, allowing you to customize your vaping style further.
Smart Compatibility for Future Flexibility
Another key advantage of this device is its dual-compatibility. The Caliburn G4 Mini works seamlessly with both GPP Pods and G3 Pods. This backward compatibility ensures that users who already own Caliburn G3 pods can continue using them without any issues.
This design philosophy makes the G4 Mini an economical and versatile choice. You won’t have to replace your existing pod inventory. Instead, you can mix and match based on your preference for resistance or flavour delivery.
The GPP Pods come in various resistances, enabling you to choose between a tighter MTL draw or a slightly looser RDL experience. The G4 Mini automatically detects the pod and adjusts its performance to deliver the optimal output.
Airflow Precision with Dual Adjustment Options
Uwell has always been praised for offering customizable airflow even in compact devices, and the Caliburn G4 Mini continues that legacy. It provides two intuitive ways to control airflow:
- Pod Rotation Adjustment – Insert the pod in one direction for tighter airflow and rotate it 180° for a looser draw.
- Side Airflow Slider – A small adjustable slider on the device allows for further fine-tuning, so you can achieve the perfect resistance level that matches your personal preference.
This dual-system control ensures versatility. Whether you enjoy a restricted MTL vape that mimics cigarette draws or a warmer RDL experience with bigger clouds, the G4 Mini adapts easily.
The airflow feels smooth and consistent, never turbulent or noisy. It provides just enough resistance to make each puff satisfying.
Convenient Pod Refilling System
Uwell designed the Caliburn G4 Mini for maximum convenience. The side-fill mechanism is simple, secure, and fast. Lift the silicone stopper, fill your e-liquid through the wide opening, and seal it tightly to prevent leakage.
Because the pod is clear, you can easily monitor the e-liquid level at a glance. There’s no guesswork — you’ll always know when to refill, which helps avoid dry hits and burnt coils.
The mouthpiece fits snugly and feels comfortable on the lips. It’s shaped to direct vapour smoothly, enhancing flavour delivery while maintaining a clean look.
Colours That Match Every Style
A device this good deserves to look great too. The Caliburn G4 Mini comes in a variety of eye-catching colours to suit every taste. The available options include:
- Bright Pink
- Grass Green
- Lake Blue
- Light Silver
- Night Black
- Slate Grey
Each finish is polished with care, ensuring the colour remains vivid and scratch-resistant over time. Whether you prefer bold and vibrant shades or subtle and classic tones, the G4 Mini has something to match your personality.
In-Box Contents
The Caliburn G4 Mini package provides everything you need to start vaping immediately. Inside the box, you’ll find:
- 1 × Uwell Caliburn G4 Mini Device
- 1 × 0.6 Ω Caliburn GPP Pod (3 mL capacity)
- 1 × USB Type-C Charging Cable
- 1 × User Manual
Everything is neatly packaged and ready for instant use. Simply fill the pod, let the coil saturate for a few minutes, and start vaping.
Performance in Real-World Use
Performance matters most in daily use. The Caliburn G4 Mini delivers consistent results across all aspects. Vapour output is dense and smooth, flavour is vibrant, and the draw feels perfectly balanced.
Even after extended use, the coil retains flavour well without premature burnout. The improved anti-leak structure ensures your pockets or bags stay clean.
The battery comfortably lasts through a day of moderate vaping, while the quick Type-C charging minimizes downtime. The airflow system offers just enough flexibility to adjust the vape style on the fly, without requiring advanced settings.
Who Is It For?
The Uwell Caliburn G4 Mini caters to a wide range of users:
- Beginners who want a simple yet satisfying introduction to vaping.
- Travelers who prefer lightweight, reliable devices.
- Flavour enthusiasts who prioritize taste over massive clouds.
- Discreet users who want a pocket-friendly kit with minimal noise and vapour.
Its intuitive design, long battery life, and rich flavour delivery make it an excellent everyday vape for nearly anyone.
Key Specifications Summary
| Feature | Details |
| Dimensions | 112.7 mm × 24.1 mm × 14 mm |
| Weight | ~46 g |
| Battery Capacity | 1100 mAh (built-in) |
| Output Power | Up to 35 W |
| Charging Port | USB Type-C |
| Pod Capacity | 3 mL (2 mL TPD version) |
| Pod Type | Caliburn GPP Pod (compatible with G3) |
| Coil Resistance | 0.6 Ω (included) |
| Filling Method | Side-fill |
| Airflow Control | Dual system (pod rotation + slider) |
| Material | PC + PCTG |
| Activation | Draw-activated |
What Makes It Stand Out
Several aspects make the Caliburn G4 Mini unique in its class:
- Balanced Power and Portability – Compact size with a strong battery and powerful output.
- Enhanced Flavour System – PRO-FOCS 4.0 ensures rich taste and longer coil life.
- Leak-Resistant Design – U² anti-leak structure keeps things clean.
- Flexible Compatibility – Works with both G3 and GPP pods.
- Dual Airflow Control – Fine-tune your draw with ease.
- Quick Charging – Type-C port ensures fast recharges.
- Stylish Finishes – Wide range of colours for every preference.
Each element complements the next, creating a user experience that feels refined, efficient, and satisfying.
Safety and Reliability
The G4 Mini includes multiple safety protections such as:
- Short-circuit protection
- Low-voltage protection
- Over-time vaping cut-off
- Overcharge prevention
These safeguards make it a dependable choice for daily use. You can vape confidently knowing that the device manages power and temperature intelligently.
Final Verdict
The Uwell Caliburn G4 Mini Pod Kit stands out as a true compact powerhouse. It proves that small devices can deliver big performance when designed right.
From its slim, ergonomic build to the upgraded PRO-FOCS 4.0 flavour system and long-lasting battery, everything about this device is crafted for convenience and satisfaction. Its compatibility with multiple pod systems, leak-proof structure, and customizable airflow make it versatile enough for every vaping preference.
If you want a pod system that offers flavour precision, simplicity, portability, and style in one cohesive package, the Caliburn G4 Mini is a strong contender. It’s reliable, elegant, and efficient — everything a modern vape should be.
