Uwell Caliburn G4 Mini Pod Kit Review

The Uwell Caliburn G4 Mini Open Pod Kit is a compact version of the original Caliburn G4. It delivers the same flavor-focused design in a smaller package. Measuring just 112.7 × 24.1 × 14 mm and weighing approximately 46g, it’s ideal for vapers who want performance without the bulk. If you are looking for rich taste, portability, and ease of use, this could be your perfect daily companion.

Box Contents

• Caliburn G4 Mini device
• 0.6 Ohm Caliburn GPP Integrated Coil Cartridge
• User Manual

Design & Build Quality

The G4 Mini features a sleek, satin-finished exterior made from a combination of aluminum alloy, PC, and PCTG, which is resistant to fingerprints. Its compact design allows it to slide easily into pockets, and surprisingly, it maintains a tough feel despite its small size. The G4 Mini features a modern and neat design with no buttons and a clear e-juice window. It is available in a variety of colors, ranging from Night Black to Grass Green, allowing it to complement a wide range of styles. It uses magnetic Caliburn GPP pods that click firmly into place. These pods feature side-fill and have a clear window to help monitor e-liquid levels.

Pod & Coil Specifications

The pods hold up to 3 mL in international markets and 2 mL in TPD-compliant regions. Filling is easy; simply pull the rubber plug on the side of the pod and fill it with your favorite e-juice. Uwell claims a 35% increase in flavor intensity and longer pod life compared to previous models, which user reports confirm with smooth and clean taste. Each pod comes with a 0.6Ω mesh coil, suitable for both mouth-to-lung (MTL) and restricted direct-lung (RDL) draws. Additional resistances of 0.4Ω, 0.9Ω, and 1.2Ω offer further customization options. A U-shaped airflow channel and ultrasonic welding technology significantly minimize leaking and condensation issues.

Vapor and Flavor Quality – Adjustable Airflow

It is reported that with PRO-FOCS 4.0, coil resistances deliver consistent, vibrant flavor. Uwell claims that the Caliburn G4 Mini enhances the pure essence of e-liquid, improving flavor satisfaction by 35%. Additionally, airflow can be controlled in two intuitive ways: by rotating the pod for two fixed levels or by fine-tuning with a sliding valve, offering a wide range of draw tightness.

Draw-Activated Device

The G4 Mini is draw-activated, making it perfect for those who prefer a button-free experience. It delivers smooth inhalation with every use.

Automatic Wattage Adjustment

The device automatically delivers its full potential of 5–35W, ensuring a balanced vape experience whether using MTL or RDL pods. Although the battery voltage delivery isn’t manually adjustable, this feature guarantees optimal performance.

Battery Life and Charging

The built-in 1100 mAh battery of the Caliburn G4 Mini significantly improves upon older models, providing approximately 4 – 4.3 mL of e-liquid per charge, enough for a day of moderate use. It features a standard 5V/1-2A USB-C port, allowing for a full charge in about 45–60 minutes. A three-color LED indicator displays battery status: green for over 60%, blue for 30–60%, and red for under 30%, making it easy to read, though not overly precise.

G4 Mini vs Original G4 Version

The Caliburn G4 has a color OLED screen, button fire, two power modes (Storm & Wave), and a 1,300mAh battery. The G4 Mini sacrifices the screen and button in favor of simplicity and portability, retaining key benefits such as flavor, airflow options, and pod compatibility. If you like screens and mode control, choose G4. If you prefer a slim design and ease of use, the Mini is ideal.

Tips for Best Use

1. Priming the Coil/Pod: Before use, allow the filled e-liquid to sit for 3–5 minutes.
2. Adjusting Airflow: Start with tight airflow and gradually open it to find your ideal draw.
3. Refilling the Pod: Refill the pod before it is completely empty to prevent dry hits and extend its lifespan.

Color Options of Uwell Caliburn G4 Mini

The G4 Mini is available in twelve colors, comprising six basic colors and six specially designed colors. Basic colors include Lake Blue, Bright Pink, Grass Green, Light Silver, Night Black, and Slate Grey. Specially designed colors include Coast Gold, Peafowl Emerald, Paddy Green, Dusty Indigo, Champagne Gold, and Phoenix Purple.

Pros and Cons

Pros include exceptional flavor due to PRO-FOCS 4.0, a trusted leak-resistant design, compact and lightweight portability, adjustable airflow, compatibility with older G3 pods, and fast USB-C charging.

Cons are the lack of a display or manual power control, a basic battery meter that some users find imprecise, the inclusion of only one pod in the kit, and the need for daily charging under heavy use.

Who It’s for

The G4 Mini is perfect for new vapers who want an effortless, draw-activated experience without the hassle of buttons or menus. It’s an excellent choice for flavor chasers seeking quality taste in a pocket-sized device. Additionally, it serves as a reliable daily companion for vapers on the go. It is ideal for G3 pod users looking to upgrade their experience without having to replace their entire collection.

The Uwell Caliburn G4 Mini offers high performance in a compact design, featuring great flavor, smart leak prevention, and adjustable airflow, all powered by a fast-charging 1100mAh battery. It lacks a display and manual power settings, but this simplicity enhances its appeal for those prioritizing ease and quality over bells and whistles.

For a portable, flavorful, and hassle-free vaping experience that fits in your pocket and lasts all day, the G4 Mini is one of the top pod kits of 2025.