Khaled used to buy a new pod device approximately every four months. Not because he loved to upgrade, but because every device encountered the same problem: a battery that died before the end of the workday, a sudden leak from the pod, and a flavor that declined after two weeks. When he first read about the Caliburn G4 Pro Koko, he stopped at one sentence: "A touchscreen in a small pod device." His question was simple: "What's the point, actually?"
This is the same question that this review answers.
The Uwell Caliburn G4 Pro Koko is the latest addition to the popular Caliburn series, combining a powerful 2000 mAh battery, a 2-inch touchscreen, three different operating modes, and coils that support MTL and RDTL vaping. All this in a compact device priced at 149 SAR. In this review, we cover the full specifications, real-world usage experience, and a true comparison with similar devices.
Order the Caliburn G4 Pro Koko now from Zero Vape
What's new in the Caliburn G4 Pro Koko?
Uwell 's Caliburn series has been known for years for its consistent flavor and ease of use. But the G4 Pro Koko came with a different question: What if we gave the user real control without complicating the experience?
The answer was the touchscreen and the three modes.
Touchscreen: A real addition or just for show?
The 2-inch touchscreen is not just for show. With a single touch, you can:
- Adjust the wattage level from 5 to 35W
- Switch between the three modes
- It clearly monitors the battery level.
- The daily withdrawal counter has dropped and reset.
For those accustomed to devices without any screen or with a small digital screen, this difference is noticeable in the comfort of daily use.
The three modes: Storm / Waves / Customize
This is what distinguishes the G4 Pro Koko from all previous Caliburn devices:
Storm mode: A powerful draw with a palpable throat hit. Ideal for users of high tobacco and nicotine flavors. Feel the full force of the draw from the very first moment.
Waves mode: A smooth draw with consistent, balanced flavor. Best suited for fruity and light salt flavors. Focuses on delivering flavor rather than heaviness.
Customize mode: Full manual wattage adjustment during the draw. A level of precision control not found on most pods of this size. Ideal for those who want to fine-tune their experience.
Full device specifications
- Power: 5-35W adjustable
- Battery: 2000 mAh built-in
- Screen: 2-inch touchscreen
- Pod capacity: 2 ml
- Compatible pods: Caliburn GPP + Caliburn G3
- Coil options: 0.9Ω (MTL draw like a cigarette) + 0.4Ω (stronger RDTL draw)
- Pull method: MTL + RDTL
- Charging: Fast USB-C, fully charges in ~45 minutes
- Activation: Draw-activated, no button
- Air control: adjustable
- Flavor technology: PRO-FOCS 4.0
- Protection technology: U² Anti-Leak
- Dimensions: 85.8 x 50 x 23mm
- Price on Zero Vape: 149 Riyals
Daily use experience
The battery is 2000 mAh, how long does it actually last?
Here's the biggest difference from all previous Caliburn devices.
Most compact earbuds have batteries ranging from 500 to 900 mAh. Khaled, whom we mentioned earlier, was charging his device twice a day. With the G4 Pro Koko, average use lasts a day or more on a single charge, and some users have reported needing a charge every two days with average use.
Charging itself is fast via USB-C, filling up in approximately 45 minutes, which is an excellent time compared to competing devices in the same category.
Flavor with PRO-FOCS 4.0 technology
Uwell specializes in flavor quality, and that's not marketing hype. PRO-FOCS 4.0 stabilizes the temperature throughout the vape to minimize variations between the first and last puffs in the same pod.
The difference is more noticeable with heavy salt flavors such as tobacco and cream, where the taste remains consistent from the first use until the end of the pod.
Withdrawal method: MTL or RDTL?
This is an important detail that many reviews overlook. The G4 Pro Koko supports two different styles depending on the pod you choose:
- 0.9Ω (MTL): A tight, cigarette-like draw. Best suited for users of salt and high nicotine. Gives a clear throat hit with a concentrated flavor.
- 0.4Ω (RDTL): Wider draw and more vapor. Suitable for fruit and freebase flavors. Experience closer to advanced devices.
By simply changing the pod, you get a completely different experience from the same device.
Shipping and everyday convenience
The USB-C port is at the bottom, which is the latest standard. The device can be used while charging, a significant detail for those who dislike waiting.
Leakage resistance
U² Anti-Leak Technology is a dual-system that prevents flavor from leaking upstream. If you're experiencing persistent leaks with your current device, this is a significant design improvement.
Compatible pods and how to choose the right ones
The G4 Pro Koko comes with two types of coils inside the same device, and supports two different pods:
GPP Caliburn Pods — Essential Pods: Uwell's next-generation G Pod Platform, designed specifically for this series. They come in two options:
- 0.9Ω: MTL draw mimics a cigarette, suitable for salt and high nicotine flavors
- 0.4Ω: Stronger RDTL draw with more vapor, suitable for mild flavors and freebase vapes
Top-fill design, built-in mesh coil, and easier for everyday use. This is the top recommended option.
Caliburn G3 pods — Backward compatibility: If you have G3 pods and want to continue using them, the device fully supports them. Useful during the transition or if you specifically like the G3 coil flavor.
Note: Both types of pods have a capacity of 2 ml. The device comes with two pods in the box.
Quick comparison: G4 Pro Koko vs. similar devices
Salma was torn between three devices: the G4 Pro Koko, the AK3 she saw at her friend's house, and the XLIM Pro she had read about. The actual differences between them were clearer than they appeared.
Caliburn G4 Pro Koko
- Best suited for: Users seeking a powerful battery and smart touchscreen control
- Battery: 2000 mAh, a full day and more
- Control: 2-inch screen + 3 operating modes (Storm / Waves / Customize)
- Price: 149 Riyals on Zero Vape
- Pros: Excellent battery life, easy-to-use screen, multiple modes, GPP and G3 compatibility
- Disadvantages: Larger than the regular G4, slightly more expensive than simpler devices.
- When to choose it: If you charge your current device more than once a day and want real control
- Best suited for: Beginners and those who want a lightweight, uncomplicated device
- Battery: 520 mAh, frequent daily charging
- Control: No screen or wattage adjustment
- Pros: Very light, consistent flavor, easy to carry in your pocket
- Disadvantages: Small battery, no wattage control, no different modes
- When to choose it: If your priority is small size and complete simplicity
OXVA XLIM Pro
- Best suited for: The average user looking for coil variety and airflow
- Battery: Average, relatively slow charging
- Control: Physical buttons + digital display
- Pros: Wide range of coil options, customizable airflow
- Disadvantages: Heavier and larger, narrower compatibility with pods
- When to choose it: If you want a variety of coils and more airflow than the battery and screen
In summary, the G4 Pro Koko strikes the perfect balance between the AK3's simplicity and the XLIM Pro's technical flexibility. For the user who wants more than an AK3 without upgrading to a more complex device, this is the ideal choice.
Browse the device and its full details on Zero Vape
Who is the Caliburn G4 Pro Koko suitable for?
This device is suitable for you if:
- You charge your current device twice a day or more and want greater convenience.
- You want to control the strength of the draw according to the flavor or mood.
- I've had a Caliburn G3 or AK3 and want a natural upgrade
- Looking for a single device that will last you a full day at work or university?
It might not be the best option if:
- Your priority is a small, very light device that fits in a tight pocket (the AK3 is more suitable for you).
- A beginner who wants to try their first device with the least possible complexity
- Your budget is limited and you're looking for the lowest possible entry price.
Frequently Asked Questions
Does the G4 Pro Koko support G3 pods? Yes, the device supports Caliburn G3 pods as backward compatible, as well as newer GPP pods.
What's the difference between the regular G4 Pro and the G4 Pro Koko? The G4 Pro Koko features a compact KOKO design with a larger 2000 mAh battery (compared to the 1800 mAh battery in the regular G4 Pro) and different operating modes (Storm/Waves/Customize instead of Smart/Custom/Storm). Both support GPP coils with 0.9Ω and 0.4Ω impedances. The Koko is slightly heavier and wider, but its battery lasts longer.
How much does it cost in Saudi Arabia? The price of the Caliburn G4 Pro Koko on Zero Vape is 149 riyals including tax.
Does the 2000 mAh battery last a full day? For the average user (50 to 80 swipes per day), yes, and more. For the heavy user, you might need a charge every two days. In either case, it's much better than most compact pods.
Does it work with salt vape flavors? Yes, it's perfectly compatible with salt vape flavors using GPP or G3 pods. The Waves setting is recommended for salt vape to achieve a consistent and smooth flavor.
Summary
The Caliburn G4 Pro Koko is not just a technological upgrade for Caliburn devices. It's a change in the way you treat your everyday pod.
The touchscreen isn't just for show. The three modes aren't unnecessary complexity. And the 2000 mAh battery isn't marketing hype. These are distinct elements of a real-world experience that you'll notice from day one.
Assessment summary:
- Battery and charging: Excellent, 2000 mAh with fast USB-C
- Flavor and performance: Powerful, the PRO-FOCS 4.0 technology is truly felt.
- Ease of use: Very good despite the multiple options
- Value for money: 149 riyals for these specifications = Clear value
- Size: Larger than the AK3, but justified by what you get.
If you are looking for an pod that will accompany you all day without the worry of charging, with true control over the experience, this is the choice.
Order the Caliburn G4 Pro Koko now, fast shipping within Saudi Arabia
For more vape pod options and available devices, browse the Zero Vape store. For shipping and delivery policies within Saudi Arabia, the details page is always available.