Uwell Caliburn G4 Review


Today, we're diving back into the world of pod systems with an even closer look at the Uwell Caliburn G4 pod vape kit. If you're on the hunt for a reliable, super-customisable, and flavour-packed vaping experience, you might just have found your next daily go to. For fans of the Caliburn series, this new Caliburn truly aims to live up to the hype. Let's break down what makes the Caliburn G4 truly stand out in a crowded market, incorporating all the latest enhancements!


Homepage - caliburn g4 box contents

First Impressions & Design Of The Caliburn G4


Right out of the box, the Caliburn G4 impresses with its sleek and minimalist design. It feels incredibly premium in the hand, thanks to its durable metallic aluminium alloy construction. It's super lightweight and compact, making it an ideal companion for on-the-go vaping. The clear-view juice window (or translucent pod to you and me) is a nice touch, allowing you to easily monitor your e-liquid levels – no more dry hits!

But here's where it gets exciting: the Caliburn G4 now proudly features a thumb-sized 0.85″ HD colour screen. This isn't just for show; it displays a carefully design. Giving you quick access to essential info like ON/OFF status, current mode, puff count, day/night mode, and charge level. You can even adjust brightness modes for optimal viewing. 

What's in the Box:

1 x Caliburn G4 Device

1 x 0.4ohm G3 Pod

1 x 0.9ohm G3 Pod

Performance & Flavour


This is where the Caliburn G4 truly shines, and it's more versatile than ever. Uwell's Pro-FOCS 4.0 Flavour Technology is legendary, and it's definitely at play here. Whether you're using freebase vape juice or nic salts, the flavour delivery is exceptional. Each puff is rich, vibrant, and incredibly satisfying. The device offers a consistent output, ensuring a smooth and enjoyable vaping experience from start to finish.

The kit includes 0.4ohm and 0.9ohm G3 pods, offering a fantastic range for both restricted direct-to-lung (RDL) and classic mouth-to-lung (MTL) vaping. The 0.9Ω pod is particularly ideal for MTL users seeking that perfect MTL draw. These are the G3 pods, ensuring top-tier performance.

Power Modes: Tailor Your Thrill


The Caliburn G4 introduces two distinct power modes, allowing you to fine-tune your vaping experience to match your mood:

  • Storm Mode: Ready for an exhilarating ride? Storm Mode is designed to satisfy your craving for vaping in a split second. It's like riding a roller coaster, where you can enjoy the thrill of immediate, intense flavour and vapor production. Perfect for those moments when you want a quick, powerful hit.
  • Waves Mode: Prefer a more relaxed and consistent vape? In Waves Mode, you can savour each and every pure, smooth, and steady puff. It's like riding the London Eye, where you can take your time and appreciate every moment of your vaping journey with a consistent and gentle output.

Tailored Airflow Control


One of the biggest upgrades is the adjustable airflow control, which is now tailored precisely to your preference. The Caliburn G4 offers multiple means of airflow control, ensuring a truly customisable experience that exceeds your wildest expectations:

  • 
Homepage - caliburn g4 airflow

    Slide the airflow valve

    A simple slider allows for quick adjustments.

  • 
Homepage - caliburn g4 airflow pod

    Load the cartridge in different orientations

    Depending on how you insert the pod, you can achieve different airflow settings.

  • 
Homepage - caliburn g4 airflow both

    Combine both methods

    For the ultimate fine-tuning, you can use both the valve and the cartridge orientation.

Battery Life & Charging The Caliburn G4


Equipped with a robust 1300mAh integrated battery, the Caliburn G4 offers significantly improved battery life, easily getting most vapers through a full day, and often more! When it's time to recharge, the Type-C port and 5V/2A fast charging feature mean you'll be back to vaping in roughly 30 minutes, which is super convenient for busy lifestyles. The 1300mAh battery ensures you're powered up for longer.


Homepage - caliburn g4 refill

Caliburn Pod Compatibility & Leak Resistance


The Caliburn G4 is geared up for compatibility! It's fully compatible with both previous and the upgraded GPP cartridges. What's more, the upgraded GPP pods with Pro-FOCS are also compatible with the CALIBURN G3 series devices, making them a versatile choice. You don’t even need to remove the upgraded GPP cartridge when refilling, adding another layer of convenience. The upgraded GPP pods also feature an improved ergonomic design, perfectly contoured to your mouth for an even more comfortable vaping experience.

Uwell has truly strived towards excellence with these GPP cartridges. Thanks to UWELL’s U² technique (Ultrasonic Welding and U-shaped Channel Design), the CALIBURN GPP cartridges boast significantly enhanced leak-proof pod performance. Every drop stays where it should be, delivering a spectacular and mess-free vaping experience.

Key Features at a Glance:

  • 0.85″ HD Colour Screen & Dynamic Theme UI: For clear info and fun, with adjustable brightness.
  • Two Power Modes (Storm & Waves): Tailor your vaping experience from thrilling to steady.
  • Precise Adjustable Airflow Control: Multiple methods for a tailored vape.
  • Pro-FOCS 4.0 Flavour Technology: Delivers outstanding flavour.
  • 1300mAh Built-in Battery: Long-lasting power for extended use.
  • Type-C Port & 5V/2A Fast Charging: Quick and convenient recharging.
  • Dual Activation: Draw-activated or button-firing (via the fire button).
  • Clear-view Juice Window: Easy e-liquid level monitoring.
  • Compatible with CALIBURN GPP Cartridges: (0.4ohm & 0.9ohm G3 pods included).
  • Upgraded GPP Cartridges: Ergonomic design, no removal for refilling.
  • U² Technique (Ultrasonic Welding & U-shaped Channel Design): Enhanced leak-proof pod performance.
  • Durable Aluminium Alloy Construction: Premium feel and robust metallic build.
  • Compact & Portable: Perfect for on-the-go.
  • Exceptional flavour production with Pro-FOCS 4.0 technology.

  • New dual power modes (Storm & Waves) for versatile vaping.

  • Advanced and precise adjustable airflow control options.

  • Large 1300mAh battery for extended vaping.

  • Fast 5V/2A USB-C charging.

  • Informative 0.85″ HD colour screen with dynamic theme UI and brightness control.

  • Highly user-friendly and intuitive.

  • Premium build quality and ergonomic design.

  • Excellent leak-proof pod resistance thanks to U² technique.

  • Wide GPP cartridge compatibility.

  • Convenient top-fill without removing the pod.

  • Versatile for both MTL or RDL vaping.

  • While improved, still a pod system, so advanced customisation (like adjustable wattage control) is not present. The Caliburn G4 focuses on simplicity and optimal pre-set output, not variable wattage.

Final Verdict


The Uwell Caliburn G4 vape kit is a truly impressive evolution in the Caliburn series. This new Caliburn truly g4 takes everything we loved about its predecessors and elevates it with significant upgrades like the vibrant HD colour screen, enhanced adjustable airflow control, a much larger 1300mAh battery, and superior leak-proof pod resistance. It truly excels in delivering superb flavour and a consistent vaping experience in a compact, stylish package. Whether you're a beginner looking for a feature-rich yet easy-to-use starter vape, or an experienced vaper seeking a convenient, powerful, and flavourful daily driver, the Caliburn G4 is definitely worth considering. It's a testament to Uwell's relentless pursuit of excellence in the vaping world, making it a strong contender for the best vape in its class.