The Caliburn G4 Pro is a 35W touchscreen pod system with a 1800mAh battery, a 3ml top-fill pod, and compatibility with the full CALIBURN GPP coil range in four resistance options: 0.4Ω, 0.6Ω, 0.9Ω, and 1.2Ω. It charges at 5V/2A via USB Type-C. This device is available at KandyVape; the current price is listed on the product page. The pod you order alongside it matters as much as the device itself, and getting that wrong in a no-return market costs real money.
The Uwell Caliburn G4 Pro is a pod system with a 1800mAh built-in battery, 35W maximum output, 3ml pod capacity, USB Type-C charging at 5V/2A, and a 2.51-inch touchscreen. It is compatible with all four CALIBURN GPP coil resistances: 0.4Ω (5W to 35W), 0.6Ω (5W to 25W), 0.9Ω (5W to 15W), and 1.2Ω (5W to 10W). The 0.9Ω and 1.2Ω pods are designed for salt nicotine; the 0.4Ω and 0.6Ω accept both salt and freebase. A clone of this device will not return a positive result at myuwell.com/verify.
What Is Actually Different Between the G4 and the G4 Pro
This is the question most buyers reach this page with. The answer is worth stating directly before anything else.
The standard Caliburn G4 runs a 1300mAh battery against the G4 Pro’s 1800mAh. The G4 uses a smaller colour screen with button operation; the G4 Pro runs a 2.51-inch shatterproof touchscreen with a full UI including six theme options and an eight-language display. The G4 Pro adds a third output mode — Custom mode — on top of the Storm and Waves presets that both devices share. The G4 Pro also introduces stepless airflow control, meaning you can adjust the draw resistance continuously rather than clicking between fixed positions.
Both devices use the same CALIBURN GPP cartridge platform, so the pods and coils are interchangeable. If you already own a Caliburn G3 series device, the GPP pods you have been buying will also fit the G4 Pro.
The functional difference, put plainly: if you want the larger battery and the touchscreen UI and you are willing to pay for those features, the G4 Pro is the step up. If you are comfortable with a smaller form factor and button operation, the standard G4 does the same job with the same pod range at a lower price. The coil performance is identical because the coil is in the pod, not in the device.
The GPP Coil Decision: Get This Right Before You Order
The GPP pod range is where most first-time G4 Pro buyers make an error, and it is the most expensive error to make in a store with a strict no-return policy.
Uwell’s CALIBURN GPP pods come in four resistance options. Each one is designed for a specific draw style and nicotine format. The table below is built from verified manufacturer-aligned specifications and should be your reference before placing any order for replacement pods.
| GPP Pod Resistance | Wattage Range | Draw Style | Nicotine Format |
| 0.4Ω mesh | 5W to 35W | RDL (Restricted Direct Lung) to open MTL | Salt nicotine or freebase |
| 0.6Ω mesh | 5W to 25W | Loose MTL to RDL | Salt nicotine or freebase |
| 0.9Ω mesh | 5W to 15W | MTL (Mouth to Lung) | Salt nicotine recommended |
| 1.2Ω mesh | 5W to 10W | Tight MTL | Salt nicotine recommended |
This table answers the question you are most likely to get wrong. The 0.9Ω and 1.2Ω pods are built for salt nicotine because the lower wattage and tighter draw produce the kind of throat sensation that salt nic at 30mg to 50mg is calibrated for. Running freebase at those resistances is possible, but 3mg to 6mg freebase at 8W through a 1.2Ω coil will produce thin vapour and weak nicotine delivery. It works the other way around too: running 50mg salt nicotine through a 0.4Ω pod at 30W will produce an extremely harsh throat hit that most people cannot tolerate past the first few puffs.
The device ships in the box with one 0.4Ω pod and one 0.6Ω pod. If you are a former cigarette smoker making a first switch, start with the 0.9Ω or 1.2Ω pod and use salt nicotine at a strength appropriate for your previous daily cigarette consumption. The tighter draw and lower wattage will feel closer to what you already know. The 0.4Ω is for experienced users who want more vapour volume and are running lower-strength liquids.
You can review the full CALIBURN GPP pod and coil specifications on the official Uwell product page to confirm these figures against the manufacturer’s own data before ordering.
The Three Output Modes, Explained Without Marketing Language
Storm, Waves, and Custom modes appear in every review of this device. Most reviews list them by name and stop there. Here is what they actually do to your puff.
Storm mode delivers a power spike at the start of the draw. You get the full wattage output from the first moment of airflow detection. This produces a sharper, more immediate throat hit and a faster ramp-up in vapour temperature. At higher wattages with a 0.4Ω pod, the combination produces a noticeably warmer draw.
Waves mode delivers power in a rising curve across the draw. The first half of the puff is cooler and lighter; the back end delivers the full output. The effect is a smoother onset of vapour and a more sustained release rather than an immediate hit. This mode works better with lower-resistance liquids and suits the 0.6Ω pod at mid-wattage.
Custom mode is the G4 Pro’s distinguishing feature. It allows you to set the output power at three separate points in a single puff: the start, the middle, and the end. That means you can dial in a softer ramp-up that finishes at maximum wattage, or a hot start that backs off to avoid dry hits on a pod that is running low. No other pod system at this price point offers three-point within-puff power control.
The Custom mode setting takes a few minutes to configure using the touchscreen UI. Once set, the device holds it until you change it. Switching between modes is a single tap on the display.
Battery and Charging: Practical Notes
The 1800mAh battery is one of the G4 Pro’s most practical advantages over the standard G4 and over most competing devices in this class. What that capacity means in real use depends on three variables: the pod resistance you are running, the wattage you set, and how heavily you use the device across the day.
At the 0.4Ω pod running between 20W and 25W with moderate use, expect multiple sessions across a full day before needing a charge. At the 1.2Ω pod running at 8W to 10W with lighter use, the battery will run significantly longer before the indicator shows depletion. We are not publishing a specific hour count because coil life and battery draw vary enough between users that a single number would mislead more than it informs.
Charging is via USB Type-C at 5V/2A. The device charges from empty to full faster than the original G4’s charging rate. A standard USB-C cable is sufficient — you do not need a dedicated fast-charger brick. Do not charge at more than 2A; the device is not designed for higher-current quick-charge protocols and charging at excessive rates will degrade the built-in battery over its cycle life.
KandyVape dispatches all orders daily at 3:00 PM, including weekends. If you need replacement pods alongside the device, ordering both together before the daily cut-off avoids a separate wait for the consumable.
What the G4 Pro’s Liquid Compatibility Actually Means
E-liquid for this device is a nicotine solution carried in a base of propylene glycol (PG) and vegetable glycerin (VG). Propylene glycol is the carrier compound that delivers throat hit and flavour definition; vegetable glycerin is the compound that produces visible vapour volume. Propylene glycol is classified as generally recognised as safe for food use by the US FDA and appears in the NIH PubChem compound database (CID 1030) as a well-characterised compound. Its behaviour in heated aerosol form is a separate and still-studied question; we cite the compound classification here as reference, not as a health claim about vaping.
For the G4 Pro specifically, the pod you choose determines which liquid ratio works best. The 0.4Ω and 0.6Ω pods tolerate a wider VG/PG split including higher-VG freebase liquids. The 0.9Ω and 1.2Ω pods wick best with higher-PG liquids or thin salt nicotine formulations. A thick, high-VG liquid run through a 1.2Ω pod at 8W will produce slow wicking and the kind of dry-hit burn that destroys the coil in a single session.
Verifying Authenticity: The Specific Steps for This Device
Clone Caliburn G4 Pro units enter Dhaka through informal import channels and are sold at prices that appear attractive. Identifying a clone before you pay is straightforward if you know what to check.
Step 1. The authentication code on the box. Every genuine Uwell device ships with a scratch-off panel on the outer packaging. Scratch it cleanly with a coin. Underneath is either an 18-digit alphanumeric code or a QR code. Go to myuwell.com/verify and enter the code without spaces. A genuine device returns a confirmation message. A clone will either return an error or return a message showing the code has already been verified — meaning the same reprinted code was used on multiple fake units and someone already checked it.
Uwell’s own guide to identifying genuine versus counterfeit devices explains what the holographic sticker looks like on a real unit and documents how clone manufacturers attempt to replicate the scratch-off panel.
Step 2. The holographic sticker. Genuine G4 Pro units carry a holographic security sticker that shifts colour and pattern when tilted. Clone stickers are printed flat and do not shift. Tilt the box under a light source before accepting delivery.
Step 3. The pod seating. Insert a GPP pod into the device. On a genuine unit, the magnetic connection is firm and the pod sits flush with no side play.
On a clone, the pod fits loosely enough that you can feel lateral movement when the pod is seated. That gap breaks the airflow seal and produces inconsistent draws.
Step 4. The touchscreen response. Power the device on and tap the corner of the screen. On a genuine G4 Pro, the touchscreen is responsive across its full surface. Clones frequently use lower-grade panels where the corners and edges do not register taps reliably.
Step 5. The USB-C port. The charging port on a genuine unit is flush with the device body and the cable seats without resistance. On clones, the port is often slightly misaligned and the cable requires pressure to seat, which degrades both the port and the cable over time.
We would rather explain this in detail than sell you a device you cannot return.
KandyVape stocks Uwell as an, and every unit we carry can be verified before or immediately after purchase at the shop in Mohammadpur.
Regulatory Context for Bangladesh Buyers
The legal status of e-cigarettes in Bangladesh changed in April 2026. As reported by Prothom Alo, Bangladesh’s parliament passed the Smoking and Tobacco Products Usage (Control) (Amendment) Act 2026, which removed the December 2025 ordinance’s prohibition on e-cigarettes. E-cigarettes are not banned under the current law. The 2026 Act does retain broad restrictions on tobacco advertising and promotion across digital and print media, and the precise application of those advertising restrictions to e-cigarette retail content remains an unsettled legal question. This article is written in informational register for that reason.
The G5 Note: Is the G4 Pro Still Worth Buying?
Uwell announced the CALIBURN G5 in April 2026. It is a newer model in the Caliburn line. The G5 is a separate product with a distinct feature set; it is not a direct replacement for the G4 Pro in the same way the G4 Pro upgraded the G4. Both devices use the GPP cartridge platform, so coil compatibility overlaps. The G4 Pro remains a current, in-production device.
Whether the G5 becomes available in Bangladesh, at what price, and when, is a question we cannot answer here. What we can confirm is that the G4 Pro’s verified specifications are unchanged, its coil supply is established, and it is a device with a known compatibility record in this market. If the G5 becomes available at KandyVape, the product page will reflect it.
FAQ
Q: Which GPP pod should I start with if I am switching from cigarettes? The 0.9Ω or 1.2Ω pod with salt nicotine is the appropriate starting point for a smoker switching for the first time. The tighter, cooler draw is closer to a cigarette’s resistance. Run the 0.4Ω or 0.6Ω pod only after you are comfortable with the device and want to experiment with different draw styles or freebase liquids.
Q: Can I use freebase nicotine in the Caliburn G4 Pro? Yes, with the right pod. The 0.4Ω and 0.6Ω GPP pods accept both salt nicotine and freebase. Do not run freebase at high nicotine strength — 3mg to 12mg freebase is the practical range for these resistances. Running 18mg or higher freebase through a pod designed for high wattage will produce an unpleasant and excessively harsh draw.
Q: How do I know if the G4 Pro I am receiving is genuine? Scratch the authentication panel on the box and enter the code at myuwell.com/verify before you sign for the delivery if possible, or within the window available to you. A positive result confirms the unit. A duplicate or error result is a strong indicator of a clone. Check the holographic sticker, the pod seat, and the screen edge response as described in the authenticity section above.
Q: When will my order be dispatched? KandyVape dispatches all orders daily at 3:00 PM, including weekends. Orders placed before that cut-off on a given day are processed the same day. Delivery windows and charges depend on whether you are inside or outside Dhaka — check the shipping and delivery page for the current rates and timeframes.
Q: What happens if the device does not suit me after I have used it? KandyVape operates a strict no-return, no-refund policy on all products. There are no exceptions available to confirm in the current brief — you should check the policy page directly before ordering for any terms that may apply. This is why this article exists in its current level of detail: the specification and compatibility information here is designed to help you make the right decision the first time. If you are uncertain whether the G4 Pro suits your draw preference, visiting the shop at Shop #22, Level #3, Sahabuddin Plaza, Adabar, Mohammadpur 1207, Dhaka allows you to handle the device before committing.
Q: Are the G4 Pro’s pods compatible with my existing Caliburn G3? Yes. The CALIBURN GPP cartridges are compatible with the G3 series as well as the G4 and G4 Pro. Uwell confirms on the G4 Pro product page that GPP pods also fit G3 series devices. Verify the specific G3 variant you own against Uwell’s compatibility information before ordering, as the G3 lineup includes several sub-models.
Q: Is there free shipping available? Orders of 3,500 BDT or above qualify for free shipping. Orders below that threshold incur a delivery charge that varies by location — the current Dhaka and outside-Dhaka rates are listed on the shipping page.
If You Are Ready to Order
Confirm the GPP pod resistance you need against the coil-to-nicotine table in this article before completing your order. The device ships with one 0.4Ω and one 0.6Ω pod in the box, so if your primary use is salt nicotine at 30mg to 50mg through a tight MTL draw, add a pack of 0.9Ω or 1.2Ω GPP pods to your order at the same time.
Orders placed before 3:00 PM are dispatched the same day. If you want to handle the device before ordering, the Mohammadpur shop is the address above.
