The Uwell Caliburn G5 Koko is a pod system with a 1600 mAh battery, 35W maximum output adjustable in 1W steps, and a 3ml top-airflow pod using the GPP platform. Four pod resistances are available: 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω, each with a confirmed wattage window. The device is compatible with all GPP cartridges across the Caliburn G3 Pro, G4, and G5 device families. It charges via USB-C at 5V/2A. Uwell rates battery life at up to 6 days under regular use; third-party testing places real-world duration between 3.5 and 5 days depending on output mode and usage volume.
What the G5 Koko Actually Is, and Who It Is For
The Caliburn G5 Koko is not a beginner’s first device, and it is not Uwell’s most powerful option. It sits in a specific position: more controllable than a fixed-output pod, smaller than a box mod, and built around the GPP pod platform that the Caliburn G3, G4, and G5 families all share. If you already own a Caliburn device from any of those generations, the G5 Koko runs the same pods. If you are buying your first pod system, it is a capable starting point provided you are willing to learn what the two output modes and the wattage adjustment actually do.
The physical form follows the KOKO shape: wider and shorter than the standard bar-style G5, closer to a playing card than a cigarette. The body is PC plastic with a leather panel, and the front face carries an animated display Uwell calls the Starlit Ocean screen. At approximately 66g, it is lighter than most people expect when they first handle it. There is a single side-mounted button and a built-in lanyard hole.
This review works through the verified specifications, what each spec means in practical use, how to pair the right pod resistance with the right nicotine format, and how to confirm the device you receive is genuine. We stock Uwell as an official distributor and we have a strict no-return policy, which is exactly why this page exists: the decision needs to be correct before the order is placed.
The Specifications, Stated Precisely
Per UWELL’s official Caliburn G5 Koko product page, the confirmed specifications are:
| Spec | Value |
| Battery capacity | 1600 mAh |
| Maximum output | 35W |
| Wattage adjustment | 1W increments |
| Charging | USB-C, 5V / 2A |
| Battery indicator | 0 to 99% on-screen |
| Pod capacity | 3ml |
| Pod fill type | Side refill (included pod) |
| Airflow | Top-airflow with anti-leak valve |
| Output modes | STORM and WAVES |
| Net weight | Approximately 66g |
| Dimensions | 84.8mm x 49.1mm x 21.8mm |
| Material | PC body, leather panel |
| Compatible pod platform | GPP (G Pod Platform) |
One figure Uwell does not publish officially is exact charge time. The 5V / 2A specification tells you the maximum charge current is 2A. Third-party reviewers have reported reaching full charge in under an hour from dead, but since Uwell does not publish a specific figure, we will not state one here. If you are doing back-to-back charges, the USB-C port and 2A rate mean it is fast by pod system standards.
The battery life claim of up to 6 days comes from Uwell’s own laboratory test conditions, which Uwell notes are based on “regular use.” Real-world duration varies significantly with mode, wattage setting, and daily puff volume. Under moderate use at WAVES mode on the 0.6Ω pod, expect a range of 4 to 5 days. Under heavy use with STORM mode on the 0.4Ω pod pushing toward 35W, expect 3 to 3.5 days. Neither figure is a guarantee; puff count and depth of draw affect actual battery draw on every session.
The Wattage Windows: What Each Resistance Is Actually For
This is the section that matters most before you order a replacement pod. The G5 Koko accepts all GPP platform cartridges across the 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω options. Each resistance has a defined wattage window, confirmed by Uwell:
| Resistance | Wattage Window | Draw Style | Notes |
| 0.4Ω | 19 to 35W | Restricted direct lung (RDL) | Higher vapour volume, warmer draw |
| 0.6Ω | 13 to 25W | MTL to RDL | The included pod; versatile middle option |
| 0.9Ω | 9 to 15W | Mouth-to-lung (MTL) | Closer to cigarette draw resistance |
| 1.2Ω | 6 to 11W | Tight MTL | Lowest power, closest to traditional cigarette feel |
The 0.6Ω pod ships with the device. That is not an accident: it is the most flexible option across the wattage range and suits the widest range of e-liquid formats at sensible settings.
The draw style matters. MTL means you pull vapour into your mouth first, then inhale, which is how cigarettes work. RDL means you inhale directly into your lungs with less restriction. If you are switching from cigarettes, the 0.9Ω or 1.2Ω at the lower end of their wattage windows will feel most familiar. The 0.4Ω at 25W-plus is a different experience entirely.
Nicotine Pairing: Which Strength Works With Which Resistance
This is the question we hear most at the counter, and getting it wrong costs a customer a device they cannot return. The principle is straightforward: lower resistance, higher wattage, more vapour produced per puff. That means the throat hit from a given nicotine concentration is amplified by the coil and wattage combination.
For the 0.4Ω pod running between 19W and 35W, freebase nicotine at 3mg or 6mg is appropriate. Running 20mg or 50mg salt nicotine through a 0.4Ω at 25W or above will produce a throat hit severe enough that most people stop using the device within days. The geometry is wrong for that pairing.
For the 0.6Ω pod at 13W to 25W, either 20mg salt nicotine or 6mg freebase works well. This is the most forgiving pod for someone still working out their preference.
For the 0.9Ω and 1.2Ω pods at their lower wattage windows, 20mg to 50mg salt nicotine is the correct format. The low wattage tempers the throat hit to a level that closely replicates a cigarette draw, which is why these resistances exist for people switching from tobacco. Freebase at 3mg to 6mg through a 1.2Ω at 7W will produce very little sensation and may feel unsatisfying to a recent switcher.
The e-liquid base ratio also affects wicking. Uwell’s GPP mesh pods wick efficiently with a 50/50 VG/PG blend. Higher VG ratios (70/30 and above) can under-wick at lower wattage, producing dry hits. If you experience a dry hit or scorched taste, check VG/PG ratio before assuming the pod is faulty. Propylene glycol, the thinner carrier in e-liquid, is documented by PubChem (CID 1030) as a low-viscosity compound that wicks readily; vegetable glycerin, documented separately by PubChem (CID 753), is significantly thicker and requires higher wattage or slower draw speed to wick cleanly through mesh.
STORM and WAVES Mode: What They Actually Change
The two output modes on the G5 Koko are not equal-wattage variants. STORM mode pushes wattage toward the upper end of the pod’s rated window.
WAVES mode runs at a lower, steadier delivery within the same window. The practical effect: STORM produces a warmer draw with more vapour per puff, at the cost of battery draw and pod lifespan. WAVES produces a cooler, smoother draw that extends both battery and pod life.
For someone coming off cigarettes who wants something that feels like a cigarette, WAVES on the 0.9Ω or 1.2Ω pod is the appropriate starting point. STORM on the 0.4Ω pod is a different use case.
The 1W manual wattage adjustment also exists independently of the two modes. You can set a specific wattage within the pod’s window and then toggle STORM or WAVES to see which delivery profile suits you at that power level. Most people settle on a preferred wattage and mode within a few sessions and leave it there.
Top-Airflow Design and the Leaking Question
Previous generations of Caliburn pods, particularly the original GK-series and some G3 variants, were prone to leaking through the airflow inlet when carried in a pocket at angle. The G5 Koko uses a top-airflow inlet, meaning the air enters above the liquid level in the pod. This geometry removes the primary cause of leakage in bottom-airflow designs, because liquid cannot sit against an open port and migrate out.
The anti-leak valve in the side-fill port adds a second layer. The port seals when the silicone plug is seated correctly. Leaking associated with the fill port is almost always a fill-technique issue: do not remove the silicone plug at an angle, fill slowly, and seat the plug fully before inserting the pod.
Neither the top-airflow design nor the anti-leak valve is a guarantee against every mode of leakage, and we will not claim otherwise. But the failure mode is better understood and easier to avoid than in earlier-generation Caliburns.
GPP Pod Platform: What Crosses Over and What Does Not
The GPP (G Pod Platform) is Uwell’s shared cartridge architecture across the Caliburn G3 Pro, G4 mini, G4, G5, G5 Koko, G5 Lite, G5 Lite Koko, and the Caliburn AIR. All GPP cartridges — both the standard GPP pods and the newer GPP Alpha pods — fit all of these devices. Per Uwell’s G Pod Platform page, the compatibility is explicitly confirmed across the G3, G4, and G5 series.
The GPP Alpha pod, announced by Uwell in April 2026, is the upgraded version of the standard GPP cartridge. Uwell states it is rated for more than 17 refills before flavor degradation, compared to a shorter expected life on the standard GPP pod. The Alpha pod is available in the same four resistances (0.4Ω, 0.6Ω, 0.9Ω, 1.2Ω) and in 2ml and 3ml capacities, in both side-fill and top-fill configurations.
If you own a Caliburn G3 Pro, G4, or any G5 variant, your existing GPP pods will work in the G5 Koko. The original Caliburn G3 (non-Pro) uses a different pod format and is not part of the GPP platform.
Verifying Authenticity Before You Pay: Specific Steps for This Device
The Caliburn G5 Koko is counterfeited at a scale that makes this section non-optional. Bangladesh’s grey market carries Caliburn-branded units that fail at several observable points. Here is what to check and in what order.
Step 1: The scratch panel code. Genuine G5 Koko units carry an 18-digit anti-counterfeit code under a scratch panel on the packaging. Scratch it off and go to myuwell.com/verify. Enter the 18-digit code. A genuine device returns a confirmed authentic result. A code that returns invalid, already used, or simply does not resolve means the device is not genuine. Do this before committing to any payment, from any seller, including us.
Step 2: The QR code. Adjacent to the scratch panel there is also a QR code that links to the same verification system. Scan it with your phone camera. The result should match the code verification.
Step 3: Physical inspection points specific to the G5 Koko. Clones of this model typically get three things wrong. The Starlit Ocean display animation on a genuine unit is smooth and shows marine animals moving across the screen with each draw. A clone typically shows a static image or a low-frame-rate animation. Second, the leather panel on a genuine unit is flush with the body at all four edges. Clone panels are frequently not adhered correctly and show a slight gap or ridge at the corners. Third, the single side-mounted button on a genuine unit clicks with a consistent, defined resistance. Clone buttons are frequently mushy or have inconsistent travel.
Step 4: The font on the serial label. Genuine Uwell serial numbers use a specific font weight. Clones frequently use a thinner or slightly different typeface that is visible under close inspection or a phone camera zoom.
If you are buying in person at a local shop and they will not let you verify the code before sealing the purchase, treat that refusal as a significant warning sign.
The G5 Koko vs. the Standard G5: What Actually Differs
Buyers frequently arrive at this question after seeing both on a website or in a shop. The answer is simpler than the model names suggest.
Both the G5 and the G5 Koko share the same 1600 mAh battery, the same 35W maximum output, the same 1W wattage adjustment, the same STORM and WAVES modes, the same GPP pod compatibility, and the same USB-C 5V/2A charging. The battery specs and performance characteristics are identical.
What differs is form factor and materials. The standard G5 is a taller, narrower bar shape in an aluminium body with a triple-tap control scheme for mode switching.
The G5 Koko is the wider, shorter KOKO form in a PC and leather body with a single side button. The G5 Koko adds the Starlit Ocean animated display; the standard G5 uses a simpler screen layout.
The choice between them is a question of how you carry the device and which physical format you prefer, not a question of performance. Neither outperforms the other on specs.
A Note on the 2026 Bangladesh Regulatory Position
E-cigarettes are not banned in Bangladesh. The Smoking and Tobacco Products Usage (Control) (Amendment) Act, 2026, gazetted on 10 April 2026, removed the e-cigarette import and sale prohibition that had been introduced in the December 2025 tobacco control ordinance. The Tobacco Control Laws database has published the amendment with the note that the Act’s advertising and promotion prohibition extends to online and digital media and point-of-sale display. Whether that prohibition extends to e-cigarette retail content specifically remains legally unsettled; a formal legal review is noted as forthcoming by the same database. We present this article in educational and informational register accordingly.
Ordering From KandyVape: Logistics as They Actually Are
KandyVape dispatches orders daily at 3:00 PM, including weekends. If your order is placed before 3:00 PM, it leaves the same day. Orders of 3,500 BDT and above qualify for free shipping. Delivery charges below that threshold and typical delivery windows for Dhaka and outside Dhaka are stated on our shipping page.
We operate a strict no-return and no-refund policy on all products. That single fact is the reason this article is as detailed as it is. A customer who orders the wrong pod resistance, or who receives a clone because they did not verify the code, cannot send the product back. We would rather spend two thousand words preventing that outcome than explain after the fact why we cannot accept a return.
The price of the Caliburn G5 Koko is listed on the product page. We did not receive a confirmed BDT price for inclusion in this article, so we will not state one. Check the product page for the current listed price before ordering.
FAQ
Q: Does the Caliburn G5 Koko work with my old Caliburn G3 pods? It depends on which G3. The Caliburn G3 Pro is part of the GPP platform and its pods are cross-compatible with the G5 Koko. The standard Caliburn G3 (non-Pro) uses a different cartridge format that is not GPP-compatible. Check the model number on your existing device before assuming compatibility.
Q: Which resistance pod should I start with if I am switching from cigarettes? Start with the 0.9Ω pod at the lower end of its 9 to 15W wattage window, paired with 20mg salt nicotine. That combination produces an MTL draw closest to a cigarette and a throat hit that does not require adjustment from what a smoker is already used to. The 1.2Ω at 6 to 11W is also appropriate if you prefer a tighter draw. The 0.6Ω pod that ships with the device is a reasonable starting point if you are not sure, but the draw is slightly more open than a cigarette.
Q: Can I use 50mg salt nicotine with the included 0.6Ω pod? Technically the device will run it. In practice, a 0.6Ω pod at 15 to 20W with 50mg salt nicotine produces a throat hit that the majority of users find too aggressive for regular use. The 0.6Ω pod is better suited to 20mg salt nicotine or 6mg freebase. If you specifically want 50mg, the 0.9Ω or 1.2Ω pod at the lower end of their wattage window is the appropriate pairing.
Q: How do I switch between STORM and WAVES mode? The G5 Koko uses the single side-mounted button. Uwell’s operating sequence, detailed in the user manual available at their download centre, uses a specific click pattern to toggle between modes. Check the printed manual in the box on arrival, as button sequences on the G5 Koko differ from the triple-tap system on the standard G5.
Q: What is the dispatch schedule if I order today? KandyVape dispatches daily at 3:00 PM, including weekends. An order placed before 3:00 PM on any day leaves the same day. Delivery windows for Dhaka and outside Dhaka are stated on the shipping page. We do not have same-day delivery within Dhaka confirmed for inclusion in this article; check the shipping page for the current stated window.
Q: What if the device does not suit me after I start using it? We operate a strict no-return and no-refund policy. There are no exceptions for preference or change of mind. This is stated on the policy page and in the FAQ. The purpose of this article is to give you enough information to make the correct decision before you purchase. If you are genuinely uncertain whether this device suits your use case, the Mohammadpur shop at Shop 22, Level 3, Sahabuddin Plaza, Adabar, Mohammadpur 1207, Dhaka is the appropriate place to inspect the device in person before committing to an order.
Q: How do I verify the device is genuine after it arrives? Scratch the panel on the outer packaging to reveal the 18-digit code. Go to myuwell.com/verify and enter the code. A confirmed authentic result means the unit is genuine. If the code returns as invalid or already used, contact us directly before using the device. Do not discard the packaging until the code has been verified; the packaging is required for the verification process.
If you know which resistance you need, the product page lists the current price and available variants. If you are uncertain whether the 0.6Ω starter pod is the right choice for your nicotine format, the table in the wattage section above is the reference. Orders placed before 3:00 PM dispatch the same day.
For in-person inspection before purchase, the KandyVape shop is at Shop 22, Level 3, Sahabuddin Plaza, Adabar, Mohammadpur 1207, Dhaka. Authenticity verification — including scratching the code and checking it at myuwell.com/verify — can be done in-store before any payment is made.
