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Uwell Caliburn X Review: OLED Display & Adjustable Wattage

Uwell Caliburn X

4.1/5

8.2

Design — 8.0
Build Quality — 8.0
Pod & Coils — 8.0
Performance — 8.0
Flavor — 9.0
Battery Life — 8.0

PROS

CONS

Our Verdict

It’s no surprise that Uwell has some of the best devices on the market. The Caliburn X is just another example of that. The new OLED is a nice addition to an already great device. The larger view port which lets you see your ejuice level is perfect and even better than previous models. 

The Caliburn X comes with two coils which both provide excellent flavor and smooth throat hits. It uses the same coils as the Caliburn G series devices and it’s easy to refill. I did have some issues with the pod leaking though, which definitely detracts from an otherwise good device.

The device comes with a 850mAh battery that will likely get you over a day of usage without needing to recharge, even if you are a heavy vaper, like myself. It does charge super quickly in about 30 minutes and has pass-through charging so you can use the device even as it charges.

A noteworthy con of this device is that the adjustable airflow is not really so adjustable. While there is an airflow slider, the airflow hole is so small that it can really only be set in one of two ways: open or closed. Fine adjustments are difficult to do, and make no difference to the draw.

All in all, I do think that this is a great device, but if they can fix the leaking issues with this pod then it would be all the better.

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Uwell has released numerous versions of the Caliburn pod device since the original. The A series Caliburn devices used pods with the coil built in, while the G series used pods with replaceable coils. Now, Uwell has introduced yet another series to the Caliburn family; the Caliburn X.

Uwell is a company that is willing to listen to their customers’ feedback on specific products, and make improvements to release a better version of the device. It seems like customers wanted a Caliburn device with a screen and adjustable wattage, and Uwell has done just that with the Caliburn X.

In the past we have done reviews on the Caliburn G, Caliburn A2, and most recently the Caliburn G2, with all three being highly rated by our team and the vaping community as a whole. The Caliburn X is not a huge difference from its predecessors, but there are some noteworthy changes which make this Caliburn device different from the rest.

The Caliburn X has an OLED display and adjustable wattage from 5-20W. The pod will hold up to 3ml of ejuice and takes replaceable G series coils. The Caliburn X also features adjustable airflow and Type-C charging.

Are these changes enough that you should consider picking one up? Keep reading to find out everything you need to know.


Box Contents

  • 1 x Uwell Caliburn X device
  • 1 x Refillable 2ml pod
  • 1 x Mesh G Coil 0.8Ω (Pre-installed)
  • 1 x Mesh G2 Coil 1.2Ω Coil (Spare)
  • 1 x Caliburn X User Manual
  • 1 x USB C charging cable

Specifications

  • Dimensions: 107.4 mm x 27.5 mm x 15.6 mm
  • E-liquid Capacity: 3ml
  • Maximum Wattage: 20W
  • OLED Display
  • Adjustable Wattage
  • Adjustable Airflow
  • Battery Capacity: 850 mAh
  • Materials: PCTG & aluminum alloy
  • Compatible with All Caliburn G Series Coils

Design & Build Quality

  • Uwell Caliburn X Device - 1

My first thoughts of the Uwell Caliburn X are that this is a beautifully designed device that seems very solid and user friendly. The color I received is lilac purple and it is a gradient of a light and dark purple with the black accents. It’s a stunning device all-around and just looks good. 

For the most part, this is very similar in design to previous Caliburn devices like the G2, but there are some big changes that set the Caliburn X apart. For one, the new OLED screen is definitely the biggest and best change, but the power button shape and adjustable wattage are welcome changes as well. The Caliburn X is a little bigger than its predecessors but still remains very compact. 

This version of the Caliburn remains solid and well built. The pod sits well in the device with no wiggle and the power button and airflow slider work without any issues. 

The Caliburn X is available in six different colors. I used the lilac purple for the purpose of this review but you can buy any of the following colors:

Color Options

  • Lilac Purple
  • Moonlight Silver
  • Lake Green
  • Matte Black
  • Ribbon Red
  • Ink Blue

Starting from the top of the device, we have a fairly standard mouthpiece. The opening is a good size and it feels very comfortable to use. The pod is very similar to those used on previous Caliburn devices like the G2.

Just below the mouthpiece is the ejuice viewing port, which is on both the front and the back of the device. The viewing port is the entire width of the device, and because the Caliburn X is quite wide, it’s a nice upgrade to the smaller viewing port on the G2. The bottom of the viewing port lines up with the bottom of the pod so you can truly see when it’s time to refill. The viewing port on the G2 didn’t allow you to see the bottom of the pod, so this is perfect.

Along the left side of the Caliburn X is a black airflow slider. Immediately, I wasn’t a huge fan of the design of the airflow on this device. It isn’t as much of an adjustable airflow slider as it is an open or closed airflow system.

There’s a single airflow hole, and the airflow hole is so small that fine adjustments take precise movement of the airflow slider. I also didn’t find these fine adjustment to make much, if any, difference to the draw. This isn’t a good user experience, nor does it count as adjustable airflow in my books. In my opinion, there are only two airflow settings on the Caliburn X — one which allows the airflow to be fully open, and the other which closes off the airflow entirely. 

The body of the Caliburn X is made of PCTG and aluminum alloy, and it feels very solid. It also has a matte, metal finish with some luster which doesn’t hold fingerprints. This material is used on the front, back, and sides of the device.

Uwell Caliburn X Device - 7

Moving to the front of the Caliburn X is the fire button, which is an oval shape and has ridges which help with grip. I find it to be more comfortable to use than previous versions which sported a circle shaped power button. 

Just below the power button is the OLED screen. The screen isn’t very large, but it is clear and contains all of the necessary information you will need such as battery life, wattage, voltage, coil resistance, and a puff counter. The display screen and the power button are contained on a black center plate. I think this center plate adds a very clean and classy look to the device. 

Near the bottom of the Caliburn X you will find the Caliburn logo printed in black. In the same spot on the back of the device there is a UWELL logo printed in black. Finally at the bottom of the device is a USB-C charging port. 


Pods

  • Uwell Caliburn X Device - Pod

The Caliburn X uses the same coils as the Caliburn G and G2. The pod comes with a mesh Caliburn G 0.8Ω coil preinstalled, and a spare Caliburn G2 1.2Ω mesh coil. When it comes to replacement coils, you can order any of Uwell’s G Series coils and they will be compatible with the Caliburn X. 

The pod connects magnetically and does not move or wiggle at all once inserted. With the pod installed you can use the viewing ports to easily check your ejuice level from either side of the device. 

The pod can hold up to 3ml of ejuice and to fill you just remove the cap of the pod. You then insert the tip of your bottle into the large hole with the red rubber stopper and press down. Once you’re done filling, the silicone in the port will self-close.


Features & Functions

Uwell Caliburn X - Screen

The screen on the Caliburn X is very simple and user friendly and it’s located just below the power button on a black panel on the front of the device. It’s an OLED screen and it looks old-school and dated due to being black and white, but it is super crisp and easy to read everything on the screen. 

The screen automatically turns off after a few seconds to save power. The screen is essentially invisible when off, so it doesn’t even look like it has a screen until you turn it on. To turn on the screen, just press the power button. Once on, you will see a battery bar along the top of the screen, just below that is other essential vaping information, including your wattage, voltage, coil resistance, and your puff count. 

To power on or power off the device, press the power button 5 times. To lock or unlock the Caliburn X, press the power button 2 times. 

To adjust the wattage, press the power button 3 times, this will cause your current wattage to blink. To scroll through the wattage use the power button. The wattage ranges from 5 to 20 watts. To set it to your desired wattage, stop scrolling at the wattage that you desire. Don’t press any buttons for a second and the number will go solid. Now your new desired wattage is set. Simple. 

To clear your puff count, press the power button 4 times, your puff count should start to blink. Then press the power button one more time, this will set it to zero. A second later it should change from blinking to solid. Now your puff count has been reset. 


Battery Life & Charging

Uwell Caliburn X Device - Type C Charging Port

The Uwell Caliburn X comes with an 850mAh battery which is a small increase from the G2 which had a 750mAh battery. I was able to get over a day of use without having to recharge, which is not bad. The new OLED screen does make it a lot easier to track your battery life, so I was never stuck without a device to use.

The power has also been increased slightly on the Caliburn X to a maximum output of 20w, which is a small but welcome upgrade from the 18W on the G2. Much like the G2, the X recharges at lightning speed; from completely dead to fully charged, I clocked it at around 30 minutes. Another plus is that you can use the device as it charges as it has a pass-through charging.


Performance

Uwell Caliburn X Device - 6

This device comes with two different coils: one mesh 0.8Ω G Coil, and one mesh 1.2Ω G2 Coil. I didn’t notice too much of a difference between the two coils and found them both to be very good. I used them both at 13W and they provided a nice warm MTL draw. The throat hit with both coils is very smooth and not harsh at all. I also did experience any dry hits or burnt tastes.

As I mentioned earlier, the airflow hole on the Caliburn X is so small that fine adjustments don’t make much of a difference at all. While Uwell markets this device as having adjustable airflow, there’s really only one setting and that’s fully open.

Thankfully, using the airflow at the fully open setting is very enjoyable and still provides a good vape. The closed setting of the airflow is pretty much useless though as it is impossible to draw on the device. Some devices will still give you a draw with the airflow completely shut as they still allow some minor airflow in, but not the Caliburn X. 

The only other downside that I had with the entire device was that I experienced quite a bit of leaking with this new Caliburn X pod. I thought maybe it was the coil, but after removing the 0.8Ω coil and using the 1.2Ω coil, I still had the same issue. I have used the G series pods in the past and did not have this issue, so I am unsure if this is just a defective pod. Nonetheless, it did hamper my experience with this otherwise great device. 


Verdict

It’s no surprise that Uwell has some of the best devices on the market. The Caliburn X is just another example of that. The new OLED is a nice addition to an already great device. The larger view port which lets you see your ejuice level is perfect and even better than previous models. 

The Caliburn X comes with two coils which both provide excellent flavor and smooth throat hits. It uses the same coils as the Caliburn G series devices and it’s easy to refill. I did have some issues with the pod leaking though, which definitely detracts from an otherwise good device.

The device comes with a 850mAh battery that will likely get you over a day of usage without needing to recharge, even if you are a heavy vaper, like myself. It does charge super quickly in about 30 minutes and has pass-through charging so you can use the device even as it charges.

A noteworthy con of this device is that the adjustable airflow is not really so adjustable. While there is an airflow slider, the airflow hole is so small that it can really only be set in one of two ways: open or closed. Fine adjustments are difficult to do, and make no difference to the draw.

All in all, I do think that this is a great device, but if they can fix the leaking issues with this pod then it would be all the better.

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Danielle Alhiraki Author Picture

Danielle Alhiraki

I started vaping in 2014 to quit smoking cigarettes. Many tries later, and I've been smoke free since 2015. Going from being a pack a day smoker, vaping changed my life for the better. Now, I want to help other smokers make the switch.

6 comments

  • Thanks for your honest & detailed review. Regarding the leak (not a minor leak either), I’ve found once the fill port no longer self-seals the vacuum in the pod is lost causing the evacuation of the liquid. I’ve tried remedying by covering the faulty seal with tape, Saran Wrap, rubber fill-port cover from different brand’s pod, etc.

    Would be great if you could do an equally honest “worst of the best…” highlighting faults of the consistently top reviewed brands? For me, considering only Uwell’s Caliburn line, early gen is the most reliable & better in flavor while the newer Caliburn top-fill pod types require repurchasing pods as often as the coils.

    Factoring in the loss of 3ml liquid with each pod’s vacuum loss, repurchase of pods + coil replacements the “X” seems to me the most expensive to maintain of the Caliburn line yet.

    I appreciate the time, effort & details you included for the review.

  • I wonder why you had leadking cause I haven’t had any leaking so far. Do you think the coil was from somewhere else? Did you get it from reputable place? I know how hard it is in many states now in USA to get vape juice and products. Since 2019 I haven’t until 2022 fall been able to order vape anything online to be delivered to me.
    Like it was the first time since 2019 I was able to purchase from a site I used often just a a few months ago.
    However still unable to order or buy any juices in my state.
    But I also noticed there’s 2 diff types of pods for the X. I didn’t notice when I ordered one is like “cvs version or cv something version”. And it has this spring like part in the bottom & preinstalled coil. (1.0ohm). The 8ohms are always out of stock. So I got 1.2 and 1ohm. And I was like “this is odd I wonder if it isn’t for salt nics like I use or if it’s better experience? I don’t know I’m not sure” you know? I also smoked a pack a day sometimes more when I was depressed. & my battery lasts a week or longer! I actually charge it only cuz I was confused that it didn’t need charging yet and wanted to make sure it was not an electric issue wifh the OLED screen. It was not any defective. It was charging and quick! I guess the c port is better which I still don’t understand fully when it comes to my vape to my apple products.

  • I can’t believe you didn’t figure out that the airflow adjusts by covering the hole slightly by the airflow adjustment. Having it closed fully obviously won’t work as there is no air flow – that’s not what its designed for. With this you can actually adjust the airflow with a lot of flexibility.

    • I’m not sure about this ‘flexibility’ that you speak of. Because the airflow hole is so small on the Caliburn X, there’s very little range of adjustment; basically none. That’s why I stated that the airflow is really only open or closed. I thought that I communicated this effectively in the review, but I will update it to better relay my sentiments.

      When the airflow hole is so small that a user has to so precisely adjust the airflow for a not even noticeable difference in the draw, this isn’t a good user experience, nor does it count as adjustable airflow in my books. If the airflow hole was larger, there was a wider range of adjustment, and the airflow actually changed, I would feel differently. As it is, I stand by the statements that I made in this review.

      • The AFC , a[art from being a tiny hole, is too loose. After careful micro adjustment I’ve been forced to keep it place with a piece of tape.
        The AFC on the cali g2 pods works much better.