Uwell Caliburn G4 Open Pod Kit Review

The Uwell Caliburn G4 Open Pod Kit is the latest evolution in Uwell’s popular Caliburn series. Known for its sleek design, rich flavor production, and user-friendly features, the G4 brings meaningful upgrades that cater to both new and experienced vapers. With its powerful battery, dynamic screen, and enhanced pod system, the Caliburn G4 is built to deliver a smooth and satisfying vaping experience.

Specs at a Glance

• Battery Capacity: 1300 mAh
• Output Power: 5W to 25W
• Charging: USB-C, 2A fast charge
• Screen: 0.85” HD color display
• Pod Capacity: 2 mL (TPD) / 3 mL (International)
• Coil Resistance: 0.4Ω (RDL) and 0.9Ω (MTL)
• Modes: Storm and Waves
• Airflow: Slider + Pod Rotation

Design & Build Quality

The Uwell Caliburn G4 maintains a minimalist and modern design crafted from lightweight aluminum alloy. It feels premium in the hand and fits comfortably in the pocket. The device weighs around 55g, making it ultra-portable without compromising durability. The smooth finish is available in multiple pastel and bold colors, catering to a wide range of style preferences.

Pods & Coils

• GPP Pod Compatibility: The G4 introduces the GPP pod system, which is also compatible with Caliburn G3 pods.
• Included Pods: Each kit comes with 0.4Ω and 0.9Ω pods, suitable for RDL and MTL vaping styles respectively.
• Flavor Technology: Uwell’s Pro-FOCS 4.0 flavor adjustment ensures rich, consistent flavor delivery.
• Leak Prevention: Ultrasonic-sealed pods and U2 anti-leak channel design keep mess to a minimum.

Airflow & Power Configuration

• Adjustable Airflow: The G4 features a triple airflow design — side slider for precise control and reversible pod orientation for further tuning.
• Power Modes:
  • Storm Mode: Delivers bold, instant vapor.
  • Waves Mode: Provides a smooth, continuous puff experience.
• Power Adjustment: Manual adjustment from 5W to 25W or auto-adjust based on pod resistance.

Display & Menu System

The 0.85” HD screen is a standout feature, displaying battery percentage, wattage, resistance, puff counter, and selected mode. The interface includes customizable day/night themes and operates via a single button (5-click on/off, 3-click mode select), with both auto-draw and button activation supported.

Performance & Flavor

Thanks to its robust 1300mAh battery and optimized mesh coils, the G4 delivers excellent vapor production and flavor clarity. It offers:

• Instant firing response
• Steady performance until battery depletion
• Versatile output for both tight MTL and airy RDL draws
• Coil lifespan of over a week under regular use

Leak Resistance & Refilling

The G4 pods are built with U2 anti-leak technology that significantly reduces condensation and seepage. Refilling is easy via side-fill or top-fill (depending on region), and the transparent pod window lets you monitor juice levels effortlessly.

Pros & Cons

Pros:

• Great battery life (1300 mAh)
• Crisp HD display
• Accurate and adjustable airflow
• Enhanced flavor via Pro-FOCS 4.0
• Fast charging (2A USB-C)
• Leak-resistant design

Cons:

• Screen may be small for some users
• Glossy finish can feel slippery
• Not ideal for direct-lung (DL) cloud chasing

Comparison with Caliburn G3 & G4 Mini

• G4 vs G3:
  • Larger battery (1300 mAh vs 900 mAh)
  • Upgraded UI with color screen
  • Improved leak resistance and pod options
• G4 vs G4 Mini:
  • G4 has larger battery and full HD screen
  • G4 Mini is lighter and more compact but lacks advanced features like power modes

Price & Value

The Caliburn G4 is competitively priced at CAD 39.99. Given the feature set and compatibility with existing G3 pods, it offers great value, especially for those upgrading from older Caliburn models.

Who Is It For?

The G4 is ideal for:

• Beginners looking for an intuitive, leak-proof vape
• MTL and RDL users who value flavor and airflow control
• Vapers upgrading from the G3 or older Caliburn models

It may not be suitable for cloud chasers or users looking for sub-ohm DL performance.

Final Thoughts and Recommendations

The Uwell Caliburn G4 Open Pod Kit successfully builds on its predecessors by offering meaningful improvements in flavor delivery, battery life, and user experience. The dynamic screen, refined pod system, and dual power modes set it apart in a crowded market. Whether you’re a beginner or a seasoned vaper, the Caliburn G4 is a smart, reliable, and flavorful choice.