The Uwell Caliburn is the pod vape that genuinely changed the category. Since the original Caliburn dropped in 2019, Uwell has shipped over a dozen iterations — Koko, A2, A3, G, G2, G3, GK2, GZ2, Tenet, AK3, G5 and the new Caliburn Bar 80K disposable. This guide covers every Uwell Caliburn currently sold in 2026: specs, coils, draw style, who each one is for, and how to verify authenticity.
Table of Contents
What is the Uwell Caliburn?
The Uwell Caliburn is a refillable pod system designed for mouth-to-lung (MTL) and restricted direct-lung (RDL) vaping. Every Caliburn device shares three traits: PRO-FOCS flavor technology, draw-activated firing (no clunky fire button), and a small 2 ml pod that delivers consistent flavor for 7–14 days per coil.
Uwell shipped the original Caliburn in late 2019. Six years later, the Caliburn G5 is the current flagship and the Caliburn Bar 80K is Uwell’s first disposable that actually competes with the Lost Mary and Geek Bar lineup.
Every Uwell Caliburn Model in 2026
- Caliburn G5 — 850 mAh, 25 W max, 2 ml refillable pod, 0.8 Ω & 1.0 Ω coils, USB-C 1A, adjustable airflow.
- Caliburn G5 KOKO — Same internals as the G5 but in a square “soap-bar” form factor; 850 mAh.
- Caliburn A2 / A3 — Entry-level. 520 mAh, fixed 0.9 Ω coil, no airflow control. Ideal for 50 mg salt nic.
- Caliburn AK3 — Slim, all-metal A-series body. Best pocket-friendly Caliburn.
- Caliburn Tenet / Tenet KOKO — Premium leather-wrapped variant; 750 mAh.
- Caliburn GZ2 — Internal type-C battery, 850 mAh, supports both 0.8 Ω and 1.2 Ω pods.
- Caliburn Bar 80K — Disposable, ~80,000 puffs, dual mesh coil, integrated screen, ~50 mg salt nic.
Editor’s pick: If you’ve never owned a Caliburn before, buy the Caliburn G5. It hits the sweet spot of price, battery, flavor and coil availability — and Uwell ships replacement pods to virtually every region.
Uwell Caliburn Coils Explained
Caliburn coils are not interchangeable across every model. Here’s what fits what:
- Caliburn G/G2/GK2/GZ/G5 coils — 0.8 Ω mesh (RDL), 1.0 Ω mesh (MTL), 1.2 Ω regular (tight MTL).
- Caliburn A2/A3/AK3 pods — pre-installed 0.9 Ω; the entire pod is replaced, not just the coil.
- Caliburn Tenet coils — share the G2 coil family (0.8 Ω, 1.0 Ω, 1.2 Ω).
Always prime a new coil. Drip 3–4 drops of e-liquid directly onto the exposed cotton, fill the pod, then wait 5 minutes before vaping. Skipping this step is the #1 cause of “burnt coil on day 1” complaints.
Uwell Caliburn G5 — Deep Dive
The Caliburn G5 is the 2025/2026 flagship. Compared to the G3, Uwell upped the battery to 850 mAh, redesigned the airflow ring (now 6 stops instead of 3), and added a small OLED status LED. The pod magnet is also stronger — no more accidental pod ejections in your pocket.
Caliburn G5 Specs
- Battery: 850 mAh, USB-C 1A (full charge ~45 min)
- Output: 25 W max, draw-activated
- Pod: 2 ml refillable, top-fill
- Coils: 0.8 Ω mesh / 1.0 Ω mesh
- Weight: 32 g
- Recommended e-liquid: 20–50 mg nic salt, 50/50 PG/VG
Uwell Caliburn G5 KOKO — Deep Dive
Mechanically identical to the G5, the G5 KOKO swaps the cylindrical body for the squared “soap-bar” KOKO chassis Uwell debuted in 2020. It feels chunkier in the hand and stands upright on a table — ideal for desk vapers.
Caliburn Bar 80K — Disposable
The Caliburn Bar 80K is Uwell’s response to the modern disposable wave. 18 ml pre-filled, dual mesh coil, integrated 600 mAh rechargeable battery, type-C charging and a small color screen showing battery + e-liquid percentage. It still uses PRO-FOCS, so flavor stays clean down to the last 5%.
Pro Tips for Longer Coil Life
- Prime every coil for 5 minutes before the first puff.
- Avoid sucralose-heavy juice — sweeteners caramelise and gunk the coil within 3 days.
- Refill before the pod hits 30%. A half-empty pod runs hotter and shortens coil life.
- Lower the wattage if you’re chain-vaping. Stick to ~15 W on a 1.0 Ω coil.
- Store upright overnight to prevent flooding.
How to Spot a Fake Uwell Caliburn
Counterfeit Caliburn pods and devices flood marketplace listings every quarter. Three quick checks:
- Scratch code: every authentic Uwell Caliburn ships with a silver scratch panel. Verify on the official Uwell site.
- Coil resistance: a 0.8 Ω coil should read between 0.75–0.85 Ω on any decent ohm reader. Fakes drift wildly.
- Print quality: authentic boxes have crisp matte print; fakes are glossy with smeared logos.
Read our full guide: How to Spot a Fake Uwell Caliburn.
Uwell Caliburn FAQ
What is the Uwell Caliburn?
The Uwell Caliburn is a refillable pod vape system manufactured by Uwell since 2019. The Caliburn line is known for its PRO-FOCS flavor technology, draw-activated firing, and long-lasting coils. Current 2026 models include the Caliburn G5, G5 KOKO, A2, Tenet, GZ2 and Caliburn Bar 80K disposable.
Which Uwell Caliburn is best in 2026?
For most vapers, the Uwell Caliburn G5 is the best all-rounder thanks to its 850 mAh battery, 25 W output, adjustable airflow and replaceable 0.8 Ω/1.0 Ω coils. If you prefer a square form factor, choose the Caliburn G5 KOKO. For zero-maintenance, the disposable Caliburn Bar 80K is the strongest pick.
How long does a Uwell Caliburn coil last?
On average, a Uwell Caliburn coil lasts 7–14 days, or roughly 2–3 refills of a standard 2 ml pod. Coil life depends on e-liquid sweetness, wattage, and how often you prime the coil. Sucralose-heavy juices shorten coil life dramatically.
How do I check if my Uwell Caliburn is authentic?
Every authentic Uwell Caliburn ships with a scratch-off security code on the box. Visit the official Uwell verification page, scratch the silver layer, enter the code and confirm the device hasn’t been registered before. Counterfeits typically have blurry print, missing scratch codes, or wrong coil resistance.
Can I use any e-liquid in a Uwell Caliburn?
The Uwell Caliburn is optimised for nicotine salt e-liquids between 20 mg and 50 mg, in a 50/50 or 60/40 PG/VG ratio. High-VG freebase juices (70+ VG) will wick poorly and can flood the coil. Stick to salt nic for the cleanest flavor.