Caliburn G4 Review: G4 vs G4 Mini vs G4 Pro

The Caliburn G line is a popular pick for both new and experienced vapers who want a simple pod vape with strong flavour. The Caliburn G4 Series aims to raise the bar with a colour screen, two output modes, and upgraded GPP pods. In this UWELL Caliburn G4 review, our in-house experts have thoroughly tested the devices, and we also took notes from industry experts to create this review for you. We have also compared the Caliburn G4, G4 Mini and the G4 Pro so you can choose the right fit.

TLDR;

Expert take: Dan, Canada Vapes Device Tester

“It’s a Caliburn. If you’ve owned one before, you know the feel. Flavour is excellent, pods last well, and the G4 Pro’s draw activation is spot on. The Ink Blue finish looks premium and the metal body feels solid in the hand.”

• Flavour is clean and strong for an MTL(Mouth to Lung) pod vape. Two output modes help tune the feel.
  
• Battery life is solid for a day of light to moderate use. Fast USB-C charging is handy.
  
• Pods feel tighter and leak less when used with simple care.
  
• G4 is the best all-rounder. G4 Mini is the light, no-frills option. G4 Pro adds a big touchscreen and the largest battery
  

Design and Build

The G4 keeps a slim, pocket-friendly body. It adds a thumb-sized 0.85 inch colour screen with simple menus. Power, themes, puff count, and day or night mode sit a tap away. The clear juice window helps you spot low liquid at a glance. Airflow is easy to set with a side slider. You can also flip the pod to change the draw.

Dan tested the Ink Blue version and called out the bright screen, clean themes, and a premium metal body that feels secure in the hand.

What Changed from Caliburn G3

The G4 brings a clearer screen, two output modes, and a more refined airflow system. The pod platform is also updated while keeping backward support for Caliburn G3-series pods.

Pods, Coils, and Flavour in Caliburn G4 Series

The G4 uses the Caliburn GPP pod family. That includes previous and upgraded GPP pods. The system aims for better leak resistance and smoother airflow using ultrasonic welding and a U-shaped channel.

In plain language, pods feel tighter and less messy when you follow basic care like not overfilling and letting wicks soak. Flavour is strong across 50-50 and 60 VG juices at modest wattages. Our in-house experts tested the devices thoroughly and revealed that pod life has also improved.

Compliance note for Canada

Uwell released “G4” pods internationally. At this time, those specific G4 pods are not CRC compliant for sale in Canada, so we do not offer them. The Caliburn G4 device works with G3-series GPP pods that are CRC compliant and widely available.

Dan’s view: “The tried-and-tested G3 pods still deliver great flavour and strong pod life on the G4.”

Performance and Battery Life

You get two output modes. Storm Mode gives a punchy first hit. Waves Mode is smoother and steadier. The G4 tops out at 35 watts and is happy at low power for MTL. Battery capacity is 1300 mAh with USB-C 5V 2A charging. In simple terms, most adult users will be fine for a day with light to moderate puffs, then a quick top-up.

Dan noted the G4 Pro’s auto-draw triggered consistently, even with lighter puffs, which is not always the case on touch-screen pod vapes.

Unique Notes from Testers Across the Industry

Some reviewers praised the flavour and the easy UI. A few mentioned inconsistent battery readings on early units and average runtime on the Mini. These are not deal breakers, but worth noting if you want the longest battery possible.

Ease of Use and Reliability

Setup is quick. Fill through the pod’s labelled port. Let the cotton soak for several minutes before the first puff. Keep the fill level above the minimum line to avoid dry hits. If you hear a gurgle, remove the pod, flick out excess, and take a few short primer puffs. The airflow slider has enough resistance so it does not move by accident. The device can be button-fire or auto-draw, which suits different habits.

Pros and Cons of Caliburn G4

Pros

• Strong flavour for an MTL pod vape
  
• Clear colour screen that stays simple
  
• Two output modes that change the feel
  
• Fast USB-C charging
  
• Works with G3-series pods
  
• Better leak control with the updated pod design
• Superb flavour for an MTL pod, confirmed by in-house testing
• Long-lasting G3 GPP pods on the G4 device
• Premium feel for the price
• Reliable auto-draw on the G4 Pro during tests

Cons

• Small screen fonts may be hard to see for some users
  
• Battery is good in G4 and G4 Mini, but not a two-day device for heavy use
  
• Early reports of battery readout quirkiness on some units
• G4 pods are not CRC compliant in Canada at this time; use G3 GPP pods instead

Caliburn G4 vs G4 Mini vs G4 Pro

Quick take: pick G4 for the best balance of features and size. Pick Mini if you want light and simple with auto-draw and no frills. Pick Pro if you want a large touchscreen, the biggest battery, and more control.

Who should buy this?

Caliburn G4: You like a bit of control without a chunky body. Solid all-day MTL with the option for light RDL.
Caliburn G4 Mini: You want the lightest pocket carry. Auto-draw only is perfect for your grab-and-go routine.
Caliburn G4 Pro: You want longer battery life and a big touchscreen. You enjoy fine tuning and custom puff curves.

Dan’s verdict

“If you want your first Caliburn or are upgrading from an older device, the G4 line is a safe entry point. It feels solid, delivers great taste, and the battery holds up for a full day of normal use.”

What Experts and Users Agree On

• Flavour is the headline. The G4 series delivers strong taste from the new GPP pods.
  
• Battery expectations. The Mini trades features for size and can feel average on runtime, which is normal for this weight class.
  
• Screen value. The G4 screen is useful without adding fuss. The Pro adds a large touchscreen for those who want more control and more battery.
  

Tips to Get the Best Out of the Caliburn G4

• Prime the pod for at least five minutes after the first fill.
  
• Start in Waves Mode if you like a smooth draw. Switch to Storm for a quick hit.
  
• Keep the airflow slider a touch tighter for MTL throat feel. Open it a bit for RDL(Restricted Direct to Lung).
  
• If you use 60 VG or thicker, give the pod longer to soak between fills.
  
• Do not chain hit on a near-empty pod. Top up early to protect the coil.

We hope that our UWELL Caliburn G4 review helped you choose the best option according to your requirements.

FAQs: Caliburn G4 Series

Is the Caliburn G4 compatible with G3 pods?

Yes. The G4 uses the GPP pod platform and supports prior GPP pods.

What is the difference between Storm and Waves Mode?

Storm gives a quick, punchy first hit. Waves is smoother and steadier across the puff.

Does the Caliburn G4 leak?

The updated GPP pods are designed to resist leaks. Good filling habits still matter. Do not overfill. Keep the pod sealed. Let wicks soak before first use.

How long does the battery last?

Most adult users get a day of light to moderate use on the G4. Heavy use may need a top-up. USB-C fast charging makes quick boosts easy.

Can I use freebase or nicotine salt e-liquid?

Both work. Match strength to your draw style. Tight MTL users often prefer 10–20 mg. Lower strengths suit open airflow and longer sessions.

What PG/VG ratio is best for the G4 pods?

50/50 or 60/40 VG/PG works well for most pods. If you use a thicker liquid, give the wick more time to saturate.

Can I adjust airflow on Caliburn G4?

Yes. Use the side slider. You can also flip the pod to change the draw.

Does Caliburn G4 support puffs while charging?

You can take short puffs while charging, but it’s best to let the battery finish charging first.

How often should I replace Caliburn G4 pods?

When the flavour dulls, the draw tastes burnt, or you need more power than usual, replace the pod. Many users see a week or more, depending on liquid sweetness and puff volume.

Does the Caliburn G4 support RDL?

Yes, light RDL with the right airflow and pod. It is still strongest as an MTL device.

Ready to Buy Caliburn G4 in Canada?

Shop Caliburn G4 Series at Canada Vapes:

• Caliburn G4 — Best all-rounder with a colour screen and two output modes.
  
• Caliburn G4 Mini — Light, pocket-friendly, auto-draw simplicity.
  
• Caliburn G4 Pro — Larger battery, big touchscreen, custom puff curves.
  
• Caliburn GPP Pods — Stock up on compatible pods for clean flavour.
  

Why Canada Vapes

• Established in 2010. Canadian owned and operated.
  
• Compliant and genuine products, along with age verification upon receiving the parcel.
  
• Fast nationwide shipping and helpful support.

Additional Resources

Download the pdf version of Caliburn G4 user manual.

Check out our entire collection of UWELL Products.