The Caliburn X was Uwell's first attempt at a more grown up pod kit, blending the range's famous flavour with proper controls. The Uwell Caliburn X is a premium feeling pod kit with an 850mAh battery, adjustable 5 to 20W power, an OLED screen, a slider for adjustable airflow, a roomy 3ml pod and replaceable G series coils, making it a versatile MTL and restricted DTL device. Here is our full review.

If you are still choosing, our guide on which Caliburn you should buy compares the range. Our guide on the best nic salts for a Caliburn covers what to vape in it.

What the Caliburn X is

The Caliburn X arrived as something of a hybrid in the range, combining the slim design feel of the A series, the replaceable coils of the G series and two features the Caliburn had never had before: an OLED screen and fully adjustable wattage. It is a slightly larger, more premium device aimed at vapers who want to fine tune their experience rather than leave everything automatic. Built from durable aluminium alloy with a single multi function button, it manages to add real control without becoming complicated, which is a tricky balance that Uwell pulled off well. In short, it is a Caliburn for people who like options.

Build and design

In the hand the Caliburn X feels solid and well made, with the aluminium alloy body giving it a reassuring, premium quality. It is a little thicker and heavier than the original Caliburn at around 46g, though it remains compact and pocketable. The standout visual feature is the OLED screen on the front, which clearly displays wattage, battery level, voltage, coil resistance and puff count in an easy to read font. A single button handles everything, including a lock function to stop it firing in your pocket. Some reviewers find the mouthpiece a touch chunkier than older models, though overall the design is clean and modern.

Performance and flavour

Where the Caliburn X really delivers is flavour, as you would expect from the range. Uwell's Pro-FOCS technology shines through, giving the clean, accurate taste the Caliburn is famous for, while the replaceable G series coils let you tune the experience. The 0.8 ohm coil suits a warmer, slightly looser draw, while the 1.2 ohm coil gives a tighter, cooler MTL hit closer to a cigarette. The adjustable wattage lets you dial the warmth to taste, while the slider airflow moves smoothly from tight MTL to a restricted direct lung draw. It is a genuinely versatile performer that adapts to how you like to vape.

To pick one up, the Uwell Caliburn collection stocks the Caliburn X alongside its replacement coils and the rest of the range.

Battery and charging

The 850mAh battery is a modest step up from the G2's 750mAh and comfortably lasts most moderate vapers over a day, though heavy users at higher wattage will want a midday top up. The OLED screen makes battery life easy to track, so you are rarely caught out. Charging is a real strength, with USB-C fast charging taking the device from empty to full in around thirty to forty minutes, while pass through charging means you can vape while it powers up. For a compact pod kit the battery is sensible rather than huge, yet the quick charging more than makes up for its modest size.

The pros and cons

On the positive side, the Caliburn X offers excellent flavour, genuine versatility through adjustable wattage and airflow, replaceable coils that keep running costs down, a useful OLED screen and fast charging, all in a premium feeling body. On the downside, the 850mAh battery is only average for its class, the 20W ceiling is lower than newer Pro models that reach 35W, plus a few find the mouthpiece chunkier than they would like. None of these are dealbreakers, though they are worth weighing if maximum power or battery life is your priority. For most vapers the strengths comfortably outweigh the minor niggles.

Who is it for?

The Caliburn X suits vapers who want more than a basic pod kit but do not want a bulky mod. It is ideal if you like adjusting your wattage and airflow, value a screen that shows you what is going on, plus want replaceable coils to keep costs down. It is a great step up for someone who started on a simpler Caliburn and now wants more control. Reviewers tend to advise against it as a very first vape, since its features are wasted on a complete beginner, yet for anyone past that stage it is one of the most satisfying pod kits Uwell makes.

How it compares to other Caliburns

The Caliburn X occupies an interesting spot in the range, so it helps to see it against its siblings. Compared with the older G2, the X adds the OLED screen, adjustable wattage and a smoother slider airflow while keeping the same replaceable coils, which makes it feel like a meaningful step up. Compared with the newer G3 and G3 Pro, the picture is more nuanced: those models use fixed coil pods and the Pro reaches a higher 35W, yet the X counters with cheaper replaceable coils and a roomy 3ml pod. Our comparison of the Caliburn G3 versus G3 Pro is worth a read if you are weighing the X against the current G3 line.

For day to day care the Caliburn X behaves like any other Caliburn, so the same good habits apply. Prime a fresh coil for five to ten minutes, refill before the liquid drops too low, then swap the coil when the flavour starts to fade. Because it takes replaceable G series coils, a worn coil is a cheap and quick fix rather than a whole new pod. Our guide on how long Caliburn pods and coils last explains the signs to watch for and how to get the most life from each one, which applies neatly to the X.

The bottom line

The Uwell Caliburn X is a versatile, premium feeling pod kit that brings adjustable wattage, a slider airflow and an OLED screen to the famous Caliburn flavour. Its replaceable coils keep running costs low and its fast charging offsets a merely average battery. The 20W ceiling and modest battery are the only real limitations, while newer Pro models now go further on power. Even so, for a flavour focused vaper who wants control without complexity, the Caliburn X remains an excellent and well rounded choice.

For more guides across the range, visit the Brand Insights: Uwell Caliburn hub. When you are ready, head to the Uwell Caliburn collection.

Vaping products are intended for use by existing adult smokers and vapers aged 18 or over. Always follow the manufacturer instructions supplied with your Uwell Caliburn device. Sold in line with UK regulations.

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