The Caliburn G4 Pro and the Caliburn G5 KOKO are two different answers to the same question: what do you carry when you want a proper pod system, not a toy, but also not a box mod the size of a paperback? One gives you a full touchscreen and more battery. The other gives you a compact square form factor with top airflow and a display that does something genuinely different. Both use the same pod platform, which matters more than almost any other spec on this page.
This article covers verified specifications, coil and pod compatibility, the correct nicotine pairing for each coil resistance, how to spot a fake unit before handing over money, and what the BDT price difference actually buys you. Because KandyVape operates a strict no-return policy, getting this decision right before you order is not optional. That is why this comparison exists.
The Caliburn G4 Pro runs an 1800mAh battery, charges at 5V/2.5A, and features a 2.51-inch touchscreen with three output modes (Storm, Waves, Custom). The Caliburn G5 KOKO runs a 1600mAh battery, charges at 5V/2A, and uses a button-operated interface with a starlit animation display. Both devices are fully compatible with all GPP (G Pod Platform) pods, including the 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω variants, and both accept the GPP Alpha pod series. The G4 Pro suits vapers who want touchscreen control and longer battery life; the G5 KOKO suits vapers who want a compact, pocket-friendly form with top airflow.
The GPP Platform: Start Here, Not With the Devices
Before comparing the two devices, the most useful thing to know is that they share a pod platform. Uwell calls it the G Pod Platform, or GPP. Every GPP cartridge — the standard variants in 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω, plus the newer GPP Alpha pods — fits the Caliburn G3, G4, G4 Pro, G5, and G5 KOKO interchangeably, as confirmed on the Uwell G Pod Platform page. If you already own a G3 or G4 device and have pods on hand, those pods fit both devices under comparison here. That alone settles a common question.
This also means your replacement cost after purchase is identical regardless of which device you choose. The pod is the consumable. The device is the chassis. If your current device is performing well and you just want the Alpha pod experience, you do not need to buy either of these — your existing GPP-compatible device will accept the Alpha cartridge. That is worth stating because selling you a new device you do not need is not a transaction that serves anyone long-term.
Spec Comparison: What the Numbers Actually Mean
| Specification | Caliburn G4 Pro | Caliburn G5 KOKO |
| Battery | 1800mAh | 1600mAh |
| Max output | 35W | 35W |
| Charging | Type-C, 5V/2.5A | Type-C, 5V/2A |
| Pod capacity | 3ml (international) | 3ml (international) |
| Compatible pods | All GPP series | All GPP series |
| Display/interface | 2.51″ touchscreen | Button + animation display |
| Output modes | Storm, Waves, Custom | Storm, Waves |
| Dimensions | 120.7mm x 30mm x 18.5mm | 84.8mm x 49.1mm x 21.8mm |
| Weight | Approx. 78g | Approx. 66g |
| Airflow | Adjustable slider (side) | Top airflow, adjustable |
| Draw style | MTL to RDL | MTL to RDL |
The 200mAh battery difference is real but not dramatic. Under typical adult use patterns — moderate daily use across a day — both devices will see you through a full working day without charging. Heavy vapers will notice the G4 Pro’s extra battery headroom more than light vapers will. The more consequential difference is the charging speed: 5V/2.5A on the G4 Pro versus 5V/2A on the G5 KOKO, which translates to the G4 Pro replenishing faster from a low charge.
That gap matters more if you charge once per day than if you charge twice.
The weight difference is 12g in favour of the G5 KOKO. That sounds small. In a pocket or a bag where the device moves constantly, 12g matters more than it looks on a spec sheet. The G5 KOKO is also physically shorter and wider, which makes it easier to conceal in a palm — relevant if you vape discretely. The G4 Pro is a pen-style device, taller and narrower. If you already own a pen-style pod and find it comfortable, the G4 Pro is a familiar form. If you have wanted to try a square KOKO-style body, the G5 KOKO is that device.
The Touchscreen vs the Button: A Real Difference, Not a Marketing One
The G4 Pro’s 2.51-inch touchscreen with six UI themes sounds like a feature built for product photography. It is also genuinely functional. Adjusting wattage, switching between Storm, Waves, and Custom modes, and resetting the puff counter are all single-tap operations. The Custom mode — exclusive to the G4 Pro — lets you define different power levels at the start, middle, and end of each puff. That is not a feature most people will use immediately, but experienced vapers who want to dial in their ramp-up behaviour will find it useful.
The G5 KOKO uses a single side-mounted button for all operations. Power on and off requires five clicks. Wattage adjustment requires three clicks, then scrolling. Mode switching requires two clicks. The starlit ocean animation on the display can be toggled off with four clicks, leaving a clean battery and wattage readout. This is a simpler interface, which is not a criticism. Many vapers prefer tactile button control to a touchscreen, especially in humidity or with damp hands — conditions relevant in Dhaka’s climate. Neither interface is objectively better; they suit different preferences.
Coil Resistance, Wattage, and Nicotine Pairing
This section carries the highest stakes in a no-return context. The wrong pairing between a coil resistance and a nicotine strength does not produce a mildly suboptimal experience — it produces a severe throat hit that makes the device unusable, or a flavour so muted that the user assumes the device is broken.
The Caliburn G5 KOKO’s per-coil wattage ranges are published explicitly on the Uwell G5 KOKO product page as follows:
- 0.4Ω pod: 19W to 35W
- 0.6Ω pod: 13W to 25W
- 0.9Ω pod: 9W to 15W
- 1.2Ω pod: 6W to 11W
Uwell has not published a comparable per-coil wattage breakdown on the G4 Pro product page. The G4 Pro supports 5W to 35W overall. Until Uwell publishes coil-specific ranges for the G4 Pro, we recommend treating the G5 KOKO’s ranges above as a cross-platform reference, since both devices run the same GPP pods at the same maximum 35W ceiling. Start at the lower end of the indicated range for any new pod and increase gradually.
Now the nicotine pairing. Propylene glycol — the carrier base in most e-liquids, documented in the PubChem compound database — becomes the primary driver of throat hit at higher nicotine salt concentrations. Pair the resistance to the strength accordingly:
| Coil | Draw Type | Nicotine Pairing |
| 0.4Ω | RDL (airy, direct lung) | 3mg to 6mg freebase. Salt nicotine at this resistance delivers a harsh hit that most vapers find unusable. |
| 0.6Ω (standard) | MTL to RDL | Up to 20mg salt nicotine, or freebase 3mg to 12mg. Versatile. |
| 0.6Ω Alpha | RDL (can be restricted to MTL by adjusting airflow) | Freebase preferred; lower-strength salt (up to 20mg) workable. |
| 0.9Ω | MTL | 20mg to 35mg salt nicotine. The classic cigarette-style draw on these devices. |
| 1.2Ω | Tight MTL | Up to 50mg salt nicotine. Designed for high-salt users who want a very restricted draw. |
A 50mg salt nicotine e-liquid run through a 0.4Ω pod on either device will produce throat discomfort severe enough that most people abandon the device within a week.
The coil is not malfunctioning. The pairing is wrong. No amount of wattage adjustment at 0.4Ω fixes a high-salt pairing. That combination has to be avoided at the point of purchase, not discovered after the fact.
The GPP Alpha Pod: What It Is and What It Is Not
The GPP Alpha pod was introduced alongside the G5 series in early 2026. Uwell rates it at 17 or more refills, totalling over 50ml of e-liquid throughput, against the standard GPP pod’s lower ceiling. The Alpha pod is currently available in 0.6Ω, with a soft-touch TPU mouthpiece that is noticeably different from the standard hard plastic tip.
What this is: a longer-lasting pod for the 0.6Ω position, with a draw character that independent reviewers (versedvaper.com) describe as punchier than the standard 0.6Ω GPP pod and comparable in intensity to the 0.4Ω pod. It is compatible with both the G4 Pro and the G5 KOKO without modification.
What this is not: a replacement for every coil in the range.
If you vape with a 0.9Ω or 1.2Ω pod for a tight MTL draw, the Alpha pod does not currently serve that position. The standard GPP 0.9Ω and 1.2Ω pods remain your option. It is also not a solved case for lifespan — Uwell’s 17+ refill figure is their rated claim from UWELL LAB testing under controlled conditions. Actual lifespan varies by wattage setting, VG/PG ratio of the liquid used, and how frequently the pod is run dry before refilling. Running the pod dry consistently shortens coil life regardless of which generation you are using.
Verifying Authenticity: The Step That Protects Your Purchase
Both the G4 Pro and the G5 KOKO are counterfeited in the South Asian market. A clone Caliburn typically reproduces the exterior with enough fidelity to pass a casual inspection. The chipset inside does not regulate power accurately, which means the 0.4Ω coil may be receiving 40W when the display shows 28W, burning the wick and the e-liquid together and producing the dry, acrid hit that most new vapers blame on the coil or the liquid.
Uwell’s official authentication system is at myuwell.com/verify. Every genuine unit has a scratch-off label on the packaging revealing a numeric code. Enter the code on that page — or scan the QR code on the box. A genuine unit will return a confirmation on first use. If the system reports the code has already been used, that unit is not genuine, or the packaging has been tampered with.
Physical checks before handing over money:
The scratch-off area should be factory-applied with consistent resistance.
A patch that lifts too easily, or a code area that looks printed rather than embossed, is a warning sign. On the G4 Pro, examine the seam where the body joins the touchscreen bezel — on genuine units this is flush and tight. On the G5 KOKO, press the leather panel lightly along its edge; on genuine units it has a firm, even adhesion with no bubbling or lifting at corners. The Uwell logo on both devices should be cleanly debossed, not stamped with visible edges or paint-applied. The USB-C port on both devices sits centrally and flush — on clones it is frequently misaligned by a millimetre or more.
We carry Uwell units through our official Uwell distribution channel. You can verify any unit purchased from us using the same myuwell.com/verify step before you even remove the device from the box. If the code fails on a KandyVape purchase, bring the box to our shop at Sahabuddin Plaza, Adabar, Mohammadpur 1207, and we will examine it directly.
Which Device for Which Vaper
The G4 Pro is the better fit if: you want the touchscreen interface and Custom mode, you want the extra battery headroom, you charge infrequently and need the faster 2.5A charging rate, or you prefer a pen-style form factor for an existing carry setup.
The G5 KOKO is the better fit if: you want the most compact KOKO-style form with top airflow, weight is a genuine factor in your daily carry, you find button control more reliable than touchscreen in variable conditions, or you prefer the starlit display aesthetic and the KOKO form.
Both devices cost different amounts. Neither price was supplied to us for this article, so we cannot quote a figure here. The current price listed on each product page is what applies at the time you order.
E-Liquid and the PG/VG Split
Both devices are designed primarily for higher-PG e-liquids in the tighter resistance pods, and PG/VG blends up to 70/30 VG work well in the 0.4Ω and 0.6Ω pods at higher wattage. Very high VG liquids (80/20 VG and above) can struggle to wick fast enough in the tighter resistance pods, particularly the 0.9Ω and 1.2Ω variants. If you are using a high-VG liquid and experiencing a muted or slightly burnt flavour without the pod being genuinely depleted, the wicking port may not be saturating quickly enough for the liquid’s viscosity. The fix is either a lower-VG liquid, a lower wattage setting, or a longer priming time — not a new pod.
Logistics for Dhaka Buyers
KandyVape dispatches orders daily at 3:00 PM, including weekends. Orders placed before the 3:00 PM cut-off are included in that day’s dispatch. Orders placed after 3:00 PM are included in the following day’s dispatch. Free shipping applies to orders of 3,500 BDT and above. Delivery charges for orders below that threshold are listed on the shipping page — check the current price listed on the product page against the threshold before ordering.
KandyVape does not accept returns or issue refunds on any product. That applies to both devices under comparison here. The detail in this article exists because a wrong purchasing decision in a no-return context is a real financial loss, not an inconvenience. Read the before ordering if you have any uncertainty.
FAQ
Q: Do the GPP pods I already own from a Caliburn G3 or G4 fit the G5 KOKO?
Yes. All GPP (G Pod Platform) cartridges are cross-compatible with the Caliburn G3, G4, G4 Pro, G5, and G5 KOKO series. You do not need to buy new pods for either device if you are already stocked. The GPP Alpha pods also fit all of these devices.
Q: What is the wattage range for the 0.6Ω pod on the G5 KOKO?
Uwell specifies 13W to 25W for the 0.6Ω pod on the G5 KOKO. Start closer to 13W to 16W and increase to taste. The 0.6Ω position handles both 20mg salt nicotine and freebase e-liquid, which makes it the most versatile pod in the range for the majority of adult switchers.
Q: Can I use 50mg salt nicotine with the 0.4Ω pod?
No. The 0.4Ω pod is designed for 3mg to 6mg freebase at 19W to 35W. A 50mg salt nicotine e-liquid at that resistance produces a throat hit that is not usable for sustained vaping. The correct match for 50mg salt nicotine is the 1.2Ω pod at 6W to 11W.
Q: How do I verify that a Caliburn G4 Pro or G5 KOKO is genuine before I use it?
Scratch off the label on the packaging to reveal the numeric code, then enter it at myuwell.com/verify, or scan the QR code on the box directly. A genuine unit will return a unique confirmation on first use. A code that has already been used or does not return a valid confirmation is a strong indicator of a non-genuine unit.
Q: How quickly will KandyVape dispatch my order if I order today?
KandyVape dispatches all orders once per day at 3:00 PM, including weekends. If your order is placed before 3:00 PM, it dispatches the same day. If it is placed after 3:00 PM, it dispatches the following day. Delivery timeframes depend on your location — check the shipping and delivery page for current estimates for Dhaka and outside Dhaka.
Q: What happens if the device I buy does not suit me or develops an issue?
KandyVape’s policy is strict no-return and no-refund on all products. There are no exceptions stated in our current policy. This is why the specifications, compatibility information, and vaping style guidance in this article are as detailed as they are — a decision that is correct from the start is the only protection available. If you have a question before ordering that this article does not answer, contact us directly before payment, not after.
Q: Is there a newer Uwell device that has replaced the G4 Pro or G5 KOKO?
As of August 2026, neither device has been superseded. Uwell launched the Caliburn AIR in June 2026, which is a separate, lighter product (39g) running the GPP Alpha pod with a 1000mAh battery — it is not a replacement for either device reviewed here but a different form factor in the same GPP ecosystem. The G4 Pro and G5 KOKO remain current products.
Before You Order
The two devices in this comparison serve the same pod platform with different form factors and different interface philosophies. If you have an existing GPP pod you prefer and just want a new chassis, compatibility with that pod is confirmed for both. If the interface — touchscreen with Custom mode on the G4 Pro, or tactile button with top airflow on the G5 KOKO — is the deciding factor, make that call based on the specifications above, not on how either device looks in promotional imagery.
You are welcome to examine both units in person at our physical shop at Shop #22, Level #3, Sahabuddin Plaza, Adabar, Mohammadpur 1207, Dhaka. Holding both form factors for two minutes will resolve the size and weight question faster than any comparison table.
