Last updated: August 10, 2026
Estimated reading time: 12 minutes
Prepared by: Basta Vape Editorial Team
The Uwell Caliburn series is one of the best-known families of refillable pod devices. In recent generations, the range has increasingly centered around the GPP – G Pod Platform, which connects many G5, G4, and G3 devices through a shared pod ecosystem.
The current range includes the CALIBURN G5 as a balanced everyday device, the G5 KOKO for users who prefer a square form factor and adjustable power, the G5 Lite for simpler operation with a large battery, and the G4 Pro for users who prioritize touchscreen controls and customization. Uwell has also introduced the lightweight CALIBURN AIR, which weighs just 39g and supports GPP pods.
Quick Answer
Choose your Caliburn device based on your main priority:
- Best all-round G5 device: CALIBURN G5
- Square design and up to 35W control: CALIBURN G5 KOKO
- Simple operation with a large battery: CALIBURN G5 Lite
- Lightest modern option: CALIBURN AIR
- Touchscreen and advanced controls: CALIBURN G4 Pro
- Balanced previous-generation option: CALIBURN G4
- Good third-generation option: CALIBURN G3 or G3 Pro
For pods, one of the biggest advantages is that GPP pods are compatible across CALIBURN G5, G4, and G3 devices.
The main GPP resistance options are:
- 0.4Ω
- 0.6Ω
- 0.9Ω
- 1.2Ω
Depending on the pod version, filling may be from the top or side, and pod capacity can vary by market.
Quick Summary
- CALIBURN G5 has a 1600mAh battery and adjustable airflow
- G5 KOKO has a 1600mAh battery and reaches up to 35W
- G5 Lite combines a 1600mAh battery with simpler controls
- CALIBURN AIR weighs approximately 39g and supports GPP and GPP Alpha pods
- G4 uses a 1300mAh battery, a 0.85-inch color display, and 2A charging
- G4 Pro offers touchscreen controls and Storm, Waves, and Custom modes
- GPP pods are available in 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω resistances
- The GPP platform connects G5, G4, and G3 devices through one broad pod ecosystem
Contents
- What is the Uwell Caliburn series?
- Caliburn generation map
- Main Caliburn device comparison
- CALIBURN G5 review
- CALIBURN G5 KOKO review
- CALIBURN G5 Lite review
- CALIBURN G5 Lite KOKO review
- CALIBURN AIR review
- CALIBURN G4 Pro review
- Is the CALIBURN G4 still worth considering?
- What about the G3 and G3 Pro?
- What are Caliburn GPP pods?
- Do G5 pods work with G4 and G3 devices?
- What is GPP Alpha?
- Caliburn pod resistance comparison
- G5 vs G5 KOKO
- G5 vs G5 Lite
- G5 vs G4 Pro
- How to choose the right Caliburn device
- Common Caliburn problems and solutions
- Frequently asked questions
What Is the Uwell Caliburn Series?
Caliburn is a family of pod devices from Uwell. The range includes traditional pen-style devices, simplified Lite models, Pro versions with more controls, and square KOKO models.
One of the most important developments in recent generations is the GPP, or G Pod Platform.
Uwell designed GPP to provide broad pod compatibility across several generations of CALIBURN devices, especially the G5, G4, and G3 series.
This means that when shopping for a replacement pod, you do not always need a pod made exclusively for one exact device model. In many cases, the more important questions are whether the device uses the GPP platform and which resistance best matches your preferred draw.
Caliburn Generation Map
G5 Series
The current G5 family includes models such as:
- CALIBURN G5
- CALIBURN G5 KOKO
- CALIBURN G5 Lite
- CALIBURN G5 Lite SE
- CALIBURN G5 Lite KOKO
These devices represent Uwell's newer generation and use the modern GPP ecosystem.
CALIBURN AIR
The CALIBURN AIR sits slightly outside the traditional G5 naming structure.
Its main priorities are low weight and simplicity. At approximately 39g, it is one of the lightest modern Caliburn devices and supports both GPP and GPP Alpha pods.
G4 Series
The G4 generation includes models such as:
- CALIBURN G4
- CALIBURN G4 Pro
- CALIBURN G4 Pro KOKO
- CALIBURN G4 Classic
This generation introduced features including PRO-FOCS 4.0, updated GPP pods, and increasingly advanced display and control systems in the Pro models.
G3 Series
Popular third-generation models include:
- CALIBURN G3
- CALIBURN G3 Pro
- CALIBURN G3 Pro KOKO
- CALIBURN G3 Lite
- CALIBURN G3 Lite KOKO
- GK3
The G3 family remains important because modern GPP pods retain compatibility with many G3 devices.
Main Uwell Caliburn Device Comparison
| Device | Battery | Display | Power | Best For |
|---|---|---|---|---|
| CALIBURN G5 | 1600mAh | Digital interface | Pod/settings dependent | Best G5 all-rounder |
| G5 KOKO | 1600mAh | Starlit display | Up to 35W | Square design and power control |
| G5 Lite | 1600mAh | LED indicator | Up to 35W with 0.4Ω | Simplicity and battery life |
| CALIBURN AIR | 1000mAh | Simplified indicators | Automatic | Lightweight everyday carry |
| G4 Pro | Varies by version | Touchscreen | Adjustable | Advanced controls |
| G4 | 1300mAh | 0.85-inch display | Adjustable | Previous-generation value |
| G3 Pro | Varies by version | Full-screen display | Up to 35W | Advanced older-generation option |
| G3 | Up to 900mAh depending on version | OLED | Up to 25W | Simple GPP-compatible option |
Specifications and package contents may vary by market and regional version.
CALIBURN G5: Best All-Rounder in the Current Generation
The CALIBURN G5 is the core device in the fifth generation and focuses on everyday use with a large battery, modern pod platform, and straightforward controls.
It uses a 1600mAh battery and offers adjustable airflow that can move from a tighter MTL draw toward a more open RDL experience.
The device also introduces Smart Triple-Tap, allowing selected functions such as mode, interface, or brightness changes to be assigned to three quick taps.
The G5 generation also introduces the GPP Alpha Cartridge, developed by Uwell as an updated version of the GPP pod system.
Choose the G5 When You Want
- A modern everyday device
- A 1600mAh battery
- Adjustable airflow
- MTL and RDL flexibility
- GPP pod compatibility
- Access to newer GPP Alpha pods
- More controls than a Lite model
CALIBURN G5 KOKO: Square Design and More Power Control
The G5 KOKO is designed for users who prefer the shorter, wider KOKO form factor.
It combines a 1600mAh battery with charging at up to 5V/2A and output reaching 35W.
Power can be adjusted in 1W increments, and the device uses PRO-FOCS 4.0 technology together with top airflow control.
Uwell lists approximate power ranges of:
- 0.4Ω: 19–35W
- 0.6Ω: 13–25W
- 0.9Ω: 9–15W
- 1.2Ω: 6–11W
Choose the G5 KOKO When You Want
- A square design
- A 1600mAh battery
- Up to 35W output
- Manual wattage adjustment
- More display information than a Lite model
- Top airflow
- Both MTL and RDL options depending on the pod
CALIBURN G5 Lite: Simplicity With a Large Battery
The G5 Lite combines simplified operation with specifications that remain relatively powerful for a compact pod device.
It uses a 1600mAh battery and can reach up to 35W with a 0.4Ω pod.
Instead of a more advanced screen interface, the G5 Lite uses a segmented LED battery indicator and focuses on straightforward operation.
Choose the G5 Lite When You Want
- Simpler operation than the G5 or G4 Pro
- A large 1600mAh battery
- No need for a full screen
- GPP pod compatibility
- MTL and RDL flexibility
- A straightforward everyday device
CALIBURN G5 Lite KOKO: Simple Operation in a Square Body
The G5 Lite KOKO takes the basic concept of the G5 Lite and places it in a square KOKO-style body.
It uses a 1600mAh battery, supports output up to 35W with a 0.4Ω pod, and uses top airflow.
The KOKO lighting system also functions as a battery-status indicator.
The main difference between the two KOKO options is straightforward:
G5 KOKO focuses more heavily on display features and detailed power adjustment.
G5 Lite KOKO focuses more on simplicity and direct operation.
CALIBURN AIR: Lightweight Everyday Option
The CALIBURN AIR approaches the range differently.
Its main priorities are low weight, compact dimensions, and straightforward operation.
At approximately 39g, it is significantly lighter than many screen-equipped devices. It supports the GPP platform, including GPP Alpha pods.
Choose the CALIBURN AIR When You Want
- A very lightweight device
- Simple operation
- GPP compatibility
- A compact everyday carry
- No need for a large display or complicated menus
CALIBURN G4 Pro: Touchscreen and Advanced Controls
The G4 Pro focuses on customization and display-based controls.
Its touchscreen interface allows users to adjust wattage, change operating modes, reset puff information, and customize the interface.
The system includes several themes and supports multiple interface languages.
Three of its key operating modes are:
Storm Mode
Designed to provide a stronger initial power delivery.
Waves Mode
Designed for a smoother and more consistent output.
Custom Mode
Allows the user to modify power behavior across different stages of the puff.
Choose the G4 Pro When You Want
- A touchscreen
- Extensive customization
- Adjustable power
- Multiple operating modes
- Puff tracking
- Themes and interface options
- Compatibility with GPP pods
Is the CALIBURN G4 Still Worth Considering?
Yes.
The CALIBURN G4 has a 1300mAh battery, a 0.85-inch color display, and Type-C charging rated at 5V/2A.
It also includes adjustable airflow and supports Storm and Waves modes while remaining compatible with the GPP ecosystem.
It can therefore be a sensible option when it is available for significantly less than a G5 and you do not need the 1600mAh battery or newer G5 features.
What About the CALIBURN G3 and G3 Pro?
The G3 generation is older, but it remains relevant because of continued GPP compatibility.
CALIBURN G3
The CALIBURN G3 reaches up to 25W and includes an OLED display, puff tracking, wattage adjustment, and several activation options.
Battery capacity can vary by version and market.
CALIBURN G3 Pro
The G3 Pro can reach 35W with a 0.4Ω pod and adds a larger display, finer airflow adjustment, and 2A Type-C charging.
CALIBURN G3 Pro KOKO
The G3 Pro KOKO combines a square design with a 1.8-inch TFT display, a 1250mAh battery, and output reaching 35W.
It remains an interesting previous-generation option for users who want a KOKO device with a relatively large display.
What Are Caliburn GPP Pods?
GPP stands for G Pod Platform.
It is Uwell's shared pod system designed to provide cross-generation compatibility among many CALIBURN devices.
The key compatibility groups are:
- G5
- G4
- G3
GPP pods are available in different filling styles, including:
- Side fill
- Top fill
- Selected prefilled versions in certain markets
The main resistance options are:
- 0.4Ω
- 0.6Ω
- 0.9Ω
- 1.2Ω
Capacity can vary between approximately 2ml, 2.5ml, and 3ml, depending on the pod and market.
Do G5 Pods Work With G4 and G3 Devices?
For modern GPP pods, generally yes.
Uwell describes the G Pod Platform as being compatible across CALIBURN G5, G4, and G3 devices.
Updated GPP pods introduced with newer generations are also designed with backward compatibility in mind.
However, two different concepts should be separated.
Physical Compatibility
The pod fits correctly and makes electrical contact with the device.
Performance Compatibility
The device can take full advantage of the pod's resistance and recommended power range.
For example, a 0.4Ω pod makes the most sense on devices capable of delivering the higher power it requires.
A 0.9Ω or 1.2Ω pod is generally better suited to a calmer MTL experience at lower power.
What Is GPP Alpha?
The GPP Alpha Cartridge is a newer version of the GPP pod platform introduced with devices such as the CALIBURN G5 and CALIBURN AIR.
Uwell describes its AlphaCore structure as being designed to improve pod longevity and maintain more consistent flavor over time.
It also uses an updated mouthpiece designed for a softer feel.
Uwell has published laboratory results showing high refill counts under its own testing conditions. These figures should not be treated as a guaranteed lifespan for every user.
Actual pod life depends on factors including:
- E-liquid composition
- Resistance
- Frequency of use
- Puff length
- Power level
- Filling habits
Caliburn Pod Resistance Comparison
| Resistance | Closest Draw Style | General Performance | Consumption |
|---|---|---|---|
| 0.4Ω | RDL | Strongest performance and more vapor | High |
| 0.6Ω | RDL / Open MTL | Balanced with stronger output | Medium to high |
| 0.9Ω | MTL | Balanced everyday use | Medium to low |
| 1.2Ω | Tight MTL | Calmer performance | Low |
0.4Ω Caliburn Pod
The 0.4Ω option is designed for users who want:
- RDL
- More vapor
- A more open draw
- Warmer and stronger performance
- A device capable of relatively higher wattage
It normally consumes more e-liquid and battery power than higher-resistance pods.
0.6Ω Caliburn Pod
The 0.6Ω pod sits between high-output performance and everyday usability.
It suits:
- Restricted RDL
- Open MTL
- Users who want more vapor than 0.9Ω
- Users who want lower consumption than 0.4Ω
0.9Ω Caliburn Pod
The 0.9Ω pod is one of the more balanced options for everyday MTL use.
It suits users who want:
- A calmer draw
- Lower consumption
- Lower wattage
- Less vapor than the 0.4Ω or 0.6Ω options
1.2Ω Caliburn Pod
The 1.2Ω pod is the highest-resistance option among the main GPP choices.
It suits users who prefer:
- Tight MTL
- Low power
- Lighter vapor
- Lower e-liquid consumption
- Better battery efficiency
Lower resistance does not automatically mean better performance. Each resistance is designed for a different draw style.
G5 vs G5 KOKO
Both belong to the same generation and use the GPP platform with 1600mAh batteries, but the overall experience is different.
Choose the G5 When You Prefer
- A pen-style body
- Adjustable airflow
- Smart Triple-Tap controls
- A balanced everyday experience
Choose the G5 KOKO When You Prefer
- A square body
- Manual output control up to 35W
- A different screen layout
- Top airflow
- A shorter device
G5 vs G5 Lite
The biggest difference is the amount of control.
The G5 provides a more advanced interface and Smart Triple-Tap functions.
The G5 Lite relies on simpler LED indicators and more direct operation.
Both use a 1600mAh battery and support the GPP ecosystem.
So:
G5 vs G4 Pro
A higher generation number does not automatically make one device better in every category.
The G5 is newer and focuses on battery life, GPP Alpha, and quick controls.
The G4 Pro places more emphasis on its touchscreen, interface customization, and Storm, Waves, and Custom modes.
Therefore:
- For a newer balanced device: G5
- For touchscreen customization: G4 Pro
How to Choose the Right Caliburn Device
I Want the Best Overall Balance
Choose the CALIBURN G5.
I Want a Square KOKO Device
Choose the G5 KOKO.
I Want the Simplest Operation
Choose the G5 Lite.
I Want the Lightest Device
Choose the CALIBURN AIR, at approximately 39g.
I Want a Touchscreen
Choose the G4 Pro or G4 Pro KOKO, depending on which form factor you prefer.
I Want a Previous-Generation Device at a Better Price
Compare the G4 and G3 Pro based on availability and price. Both remain connected to the GPP ecosystem.
How to Confirm the Correct Caliburn Pod Before Buying
- Read the full name of your device.
- Confirm whether it belongs to the G Pod Platform – GPP
- Look for GPP identification on the pod packaging
- Choose the resistance based on your preferred draw style
- Check whether the pod uses top or side filling
- Confirm capacity, as it may be 2ml, 2.5ml, or 3ml
- Do not rely on pod appearance alone
- Do not assume every historical Caliburn pod works with every Caliburn device
- When choosing 0.4Ω, confirm that your device supports the required output range
- Compare the replacement pod name with your current pod before ordering
The GPP platform connects G5, G4, and G3 devices, but that does not mean every pod ever released under the Caliburn name is universally compatible.
Common Caliburn Problems and Solutions
The Device Does Not Recognize the Pod
Try:
- Removing and reinstalling the pod
- Drying the electrical contacts
- Cleaning any condensation or e-liquid
- Checking the pod base for damage
- Testing another compatible GPP pod
Burnt Taste
Possible causes include:
- Low e-liquid level
- Using a new pod before the cotton is fully saturated
- Taking repeated puffs too quickly
- Using excessive power
- A pod that has reached the end of its life
If the burnt taste continues, replace the pod because GPP pods use integrated coils.
Gurgling or E-Liquid Reaching the Mouthpiece
Possible causes include:
- Overfilling
- E-liquid entering the airflow channel
- Drawing too hard
- Condensation
- Flooding around the coil
Clean the pod and mouthpiece and remove excess liquid before using it again.
E-Liquid Under the Pod
GPP pods use Uwell's U² anti-leak design, but no refillable pod system is completely immune to condensation or leakage.
Check:
- The pod for cracks
- The filling port
- E-liquid level
- Mouthpiece condition
- Device contacts
- Pod age
When Should You Replace a Caliburn Pod?
Replace the pod when you notice:
- Persistent burnt taste
- Significant flavor loss
- Reduced vapor production
- Repeated leaking caused by physical damage
- A major change in draw performance
- The device no longer recognizing the pod after cleaning
- Damage to the filling port or mouthpiece
Pod lifespan is not fixed. It varies according to e-liquid, resistance, puff frequency, power, and filling habits.
Frequently Asked Questions
What Is the Best Uwell Caliburn Device?
For a balanced current-generation device, the CALIBURN G5 is a strong choice.
For a square design and manual power control, choose the G5 KOKO.
For simplicity, consider the G5 Lite.
For touchscreen controls and advanced customization, the G4 Pro remains particularly strong.
Do G5 Pods Work With the G4?
If they are part of the GPP platform, generally yes. GPP is designed for compatibility across G5, G4, and G3 devices.
Do G4 Pods Work With the G3?
Updated GPP pods associated with the G4 generation are designed to retain compatibility with G3 devices.
What Is the Difference Between 0.6Ω and 0.9Ω?
The 0.6Ω pod generally provides a more open draw and higher output.
The 0.9Ω pod is closer to a calmer MTL experience and operates at lower power.
On the G5 KOKO, Uwell lists approximately:
- 0.6Ω: 13–25W
- 0.9Ω: 9–15W
What Is the Best Caliburn Resistance for Everyday Use?
For balanced MTL use, 0.9Ω is a practical starting point.
Choose 0.6Ω for stronger performance and 1.2Ω for a tighter, lower-power draw.
Is 0.4Ω Suitable for Beginners?
Not necessarily.
The 0.4Ω pod is designed for higher output and a more open draw and generally consumes more e-liquid and battery power.
Is the G5 Better Than the G4 Pro?
Not in every category.
The G5 is newer and focuses on battery capacity, GPP Alpha, and streamlined controls.
The G4 Pro remains more advanced in terms of touchscreen customization and detailed operating modes.
What Is the Lightest Modern Caliburn Device?
The CALIBURN AIR is listed at approximately 39g.
Is the CALIBURN G3 Still Worth Buying?
It can still make sense when available at a good price, especially because the GPP ecosystem continues to support many G3 devices.
Conclusion
Choosing a Uwell Caliburn device becomes easier when you start with your priority rather than the model number:
For GPP pod resistance:
- 0.4Ω: Higher output and more vapor
- 0.6Ω: Balanced performance with a stronger feel
- 0.9Ω: Balanced everyday MTL
- 1.2Ω: Tighter MTL with lower consumption
The most important advantage of the modern Caliburn ecosystem is GPP compatibility. A shared pod platform across G5, G4, and G3 devices makes moving between many Caliburn models considerably easier.
Related Guides
Important Notice
This content is educational and intended for adults only.
Vape products are not risk-free, and e-liquids may contain addictive nicotine. Keep devices, pods, and e-liquids away from children and animals. Use only compatible components and follow the manufacturer's instructions.