If you're on the fence about the Uwell Caliburn G4 PRO Open Pod Vape, you've landed in the right place. If you've been around pod vapes for a while, you already know the Uwell Caliburn series — it's earned a reputation across Canada for stripped-back design, steady performance, and flavour that just works. The G4 PRO is the line's most feature-rich pod kit to date, and I've spent the last few weeks putting it through proper daily use. Here's my honest take.
Reviewed by AK· Tested over 4 weeks of daily use.
The verdict, upfront.
The Uwell Caliburn G4 PRO is the Caliburn that finally trusts you to make decisions. Adjustable wattage, a proper touchscreen, a smooth side-adjustable airflow slider, and the same flavour-first mesh-coil pods that the Caliburn series has been quietly nailing for years. If you've used a basic pod and wished you had a little more control without leaping into a full mod setup, this is the in-between pod device you've been waiting for.
It isn't perfect. It's slightly chunkier than the standard Caliburn, the wattage range will feel like overkill if you only ever vape at one setting, and you'll still need to look after your coils properly. But for a sub-$42.99 CAD pod kit, it's the most well-rounded refillable I've tested this year.
Best for: Canadians stepping up from disposables, flavour-chasers, and anyone who wants control without complication.
Skip it if: you want pure plug-and-play, or you only ever vape one liquid at one strength and never want to think about settings.
[Buy Uwell Caliburn G4 PRO at Fraser Stop N Go →]
What is the Uwell Caliburn G4 PRO?
The Uwell Caliburn G4 PRO is a refillable open-pod vape kit with adjustable wattage, a 1,800mAh battery, USB-C fast charging, and an integrated smart touchscreen. It sits in the mid-range pod kit category, between basic disposables and full sub-ohm mod kits, and is built for adult vapers who want airflow and power control without the learning curve of advanced devices.
In plain terms: it's a refillable pod kit you can tune. Tighter draw for a stronger throat hit, looser draw for more vapour. Lower wattage when you want it to last all day, higher wattage when you want flavour and clouds. The screen tells you what's going on. The pod clicks in magnetically and refills from the side.
That's the whole pitch, and after a couple of weeks in my pocket, I think it lands.
What's in the box?
- Uwell Caliburn G4 PRO device
- Refillable pods — 2mL pod capacity
- USB-C charging cable
- User manual
Nothing fancy. No starter e-liquid, no extra coils in a bag, just the pod device, the pods, and the cable. Fill the pod, click it in, set your wattage, and go.
Design and feel
The G4 PRO feels like a step up from the classic Caliburn line, slightly larger, but still pocket-friendly enough to disappear into a jeans pocket. The matte finish doesn't pick up fingerprints the way glossy pod kits do, which is a small thing that matters when you handle a device fifty times a day. The grip shape is rounded on the back edge, flat on the front where the screen sits, comfortable in the hand, even on longer sessions.
A few build quality details worth flagging:
- The magnetic pod connection is firm. No wobble, no accidental pop-out when you pull it from your pocket.
- The airflow slider on the side moves with a satisfying amount of resistance — it stays where you put it, which sounds obvious but isn't the case on every pod kit at this price.
- The touchscreen is clear enough to read indoors and outdoors, though direct midday sun washes it out slightly.
- USB-C port at the base, which means it charges from any modern cable you already have lying around.
What's missing: no lanyard loop, and the device gets noticeably warm at the top wattage settings after a long session. Neither is a dealbreaker, but worth knowing.
The pod and coil
The G4 PRO uses Caliburn GPP pods, i.e. Uwell's open refillable pods, meaning you fill them yourself with any compatible e-liquid, rather than buying sealed pre-filled cartridges. Each pod holds 2mL of juice and contains an integrated mesh coil, a type of heating element that uses a flat mesh strip instead of a traditional wire wrap, which spreads heat more evenly across the e-liquid wick.
In practice, this matters for two reasons.
- First, flavour: Mesh coils produce more even heating, which means the flavour profile of your e-liquid stays consistent from the first puff to the last instead of getting muted halfway through the pod's life.
- Second, longevity: With reasonable care, no chain-vaping until dry, no leaving the pod empty for days, I got a comfortable 7–10 days out of a pod before flavour started to dip.
The side-refill design is the small win nobody talks about. No awkward side plugs, no e-liquid on your fingertips. Pop the silicone cap, fill, close, vape.
Airflow — three settings that actually feel different
The side-adjustable airflow slider gives you three useful positions. Most pod vapes have airflow control in name only; this one's slider produces draws that genuinely feel like three different devices.
Tight MTL: Restricted, cigarette-like mouth-to-lung draw. The throat hit sharpens, the vapour concentrates, and nicotine satisfaction comes faster. This is the setting if you're transitioning from cigarettes or using a higher-strength salt nic.
Medium: Balanced — enough air to soften the hit, enough restriction to keep flavour focused. This is where I left the slider for daily use.
Open airflow: Airy and loose, more vapour, lighter on the throat. Pairs best with lower nicotine strengths (3–10mg) where you want flavour and clouds without the punch. Some users classify this as RDL territory.
The slider holds its position during use, even rattling around in a pocket all day. That's the small detail I appreciate most.
Flavour and vapour performance
Flavour is where this device earns its keep. The mesh coil delivers genuinely clean flavour separation, top notes stay top notes, base notes don't muddy out two hours in. Fruit blends taste like fruit blends, not generic sweet liquid. Menthol stays crisp instead of dulling. Dessert flavours hold their richness.
Vapour output scales with wattage exactly as you'd expect: light and tight at the low end, dense and warm at the top. The G4 PRO is designed to cap out at 35W, which is enough headroom for most vaping styles without pushing into sub-ohm territory.
Battery life.
The 1,800mAh battery capacity is generous for a compact pod kit this size. Real-world numbers from my use:
- Low wattage, light use: comfortably 1.5 to 2 days between charges
- Medium wattage, regular use: full day, end-of-evening top-up
- High wattage, heavy use: daily charge needed, sometimes a top-up in the afternoon
USB-C fast charging takes it from empty to full in about 45–60 minutes. Pass-through vaping while charging works fine if you forgot to plug it in last night. There's also a battery saver mode visible on the UI that kicks in to protect long-term battery capacity.
Daily use — what stood out after 4 weeks
The honest answer: the device became routine. I used it without thinking about it. I charged it when needed. I took a puff, and it worked the same every time. The pod stayed secure. The touchscreen showed clear info. The wattage stayed fixed after I set it. The adjustable airflow did not shift in my pocket.
The only moments I noticed it were positive. The flavour stayed strong even after several days on the same pod. The battery warning appeared early, which helped me plan a charge.
The G4 PRO is designed for vapers who want a customizable, fuss-free vaping experience, and that's exactly what it delivers. If you come from disposable vapes, the wattage setting may feel new at first. It takes a short time to find the right level. After that, the ease of use is exactly what you'd want from a daily carry.
Pros and cons
Pros:
- Clean, consistent flavour across the pod's life
- Three genuinely distinct adjustable airflow settings, including tight MTL and open airflow
- Adjustable wattage up to 35W gives real-world tuning, not gimmick control
- Strong 1,800mAh battery for the compact pod size
- USB-C fast charging
- Open pod system — use any e-liquid, any strength
- Smart touchscreen display is clear and useful
Cons:
- Slightly larger than the basic Caliburn line
- Wattage control adds a small learning curve for first-timers
- No pre-filled sealed pod option for convenience buyers
- Gets warm at 35W after extended sessions
- Screen washes out slightly in direct sunlight
Uwell Caliburn G4 PRO vs Caliburn G3 pods
The obvious question for anyone already in the Caliburn family, specifically, users running G3 pods.
| Feature | Caliburn G3 |
Caliburn G4 PRO
|
| Battery | 900mAh | 1,800mAh |
| Wattage control | Fixed |
Adjustable (up to 35W)
|
| Display | Basic indicator |
Smart touchscreen
|
| Airflow | Adjustable slider |
Adjustable airflow (refined)
|
| Pod system | Open refillable | Open refillable |
| Charging | USB-C |
USB-C fast charging
|
| Best for | Lighter daily use |
Full-day use with control
|
The upgrade is worth it if: you want longer battery life, you've outgrown a fixed-wattage device, or you want a screen that tells you what's going on.
Stick with the G3 if: the smaller size matters more to you, or you genuinely never adjust settings.
For most Canadians stepping up from the Caliburn G3, the G4 PRO is a real upgrade — not a feature-creep release.
How does it compare to other pod kits?
In the broader pod kit category, the G4 PRO competes with devices like the Vaporesso Xros 4 Nano and Smok Nord 5, both widely stocked in Canada. Quick read: the Xros is slightly more compact with a less pronounced flavour profile, the Novo runs warmer with more raw power. The G4 PRO sits in the middle — better-balanced flavour than the Novo, more control and longer battery than the Xros. Pick based on what matters most to you: control (G4 PRO), pocket size (Xros), or cloud production (Novo).
Frequently asked questions
Is the Uwell Caliburn G4 PRO refillable?
Yes. The Caliburn G4 PRO uses Uwell's open refillable pod system, allowing users to fill the pod with any compatible nicotine salt or freebase e-liquid up to the legal Canadian limit of 20mg/mL. Pods are not pre-sealed.
What coil does the Caliburn G4 PRO use?
The Caliburn G4 PRO uses integrated mesh coils built into each replaceable pod. The mesh design delivers more even heating across the wick, producing cleaner flavour separation and better coil longevity compared to traditional wire-wrap coils.
How long does the Caliburn G4 PRO battery last?
The 1,800mAh battery lasts approximately 1 to 2 days at low wattage, a full day at medium wattage, and requires daily charging at high wattage. Real-world battery life depends on draw frequency, wattage setting, and e-liquid viscosity.
Is the Caliburn G4 PRO better than the Caliburn G3?
Yes, for most users. The G4 PRO offers double the battery capacity, adjustable wattage, a smart display, and USB-C fast charging. The G3 remains a strong choice for users who prefer a smaller device and never adjust settings.
What e-liquids work in the Caliburn G4 PRO?
The Caliburn G4 PRO works best with nicotine salt e-liquids in fruit, menthol, dessert, and tobacco flavour profiles. Freebase nicotine e-liquids with a roughly 50/50 PG/VG ratio also perform well. Avoid very high-VG e-liquids (above 70% VG) as they may struggle to wick properly.
How do I clean the Caliburn G4 PRO pod?
Empty the pod, rinse the chamber with warm water (avoid submerging the coil contacts), pat dry with a paper towel, and let it air dry for a few hours before refilling. Regular cleaning extends coil life and prevents flavour mixing between e-liquids.
Is the Caliburn G4 PRO legal in Canada?
Yes. The Uwell Caliburn G4 PRO is fully compliant with the Tobacco and Vaping Products Act (TVPA) when used with e-liquids at or below the 20mg/mL nicotine limit. All Caliburn G4 PRO devices sold by Fraser Stop N Go are sourced from authorized Canadian distributors.
How much is the Uwell Caliburn G4 PRO in Canada?
The Uwell Caliburn G4 PRO is priced at 42.99 CAD at Fraser Stop N Go, with free Canada-wide shipping on orders over $100, same-day delivery in Surrey and Langley, BC, and next-day delivery across British Columbia via Canada Post Expedited.
Final word.
The Caliburn line remains a common choice for users moving from disposables. It gives simple use and steady performance, which makes it easy to recommend. The G4 PRO keeps that same approach and adds more control for users who want extra settings.
It is not the most advanced device this year, but it delivers consistent results in daily use. The flavour stays stable. The controls feel practical. The device works without issues.
It is a solid upgrade for users who want more control without adding complexity.
