520 mAh • 15W • KOKO MTL POD
Uwell Caliburn AK2 Pod Mod Electronic Cigarette
A compact and user-friendly MTL pod system featuring a 2 ml top-fill cartridge,
auto-draw system, Pro-FOCS flavor technology, and a lanyard.
⚡
520 mAh Battery
Built-in battery in a compact body
◆
Max 15W
Automatic output suited to the cartridge
✓
2 ml Cartridge
Practical top-fill system
∼
0.9Ω Mesh
Balanced MTL vaping experience
Uwell Caliburn AK2
The Uwell Caliburn AK2 is the second-generation square-bodied pod system of the Caliburn KOKO series.
It combines a 520 mAh built-in battery, a maximum 15W output, and a 2 ml e-liquid capacity
within a compact body weighing only 35 grams.
The device features no fire button. Thanks to the auto-draw system activated by the air pressure sensor,
it is operated simply by inhaling through the mouthpiece. Its menu-free and wattage-free
design provides ultimate convenience for users seeking simplicity.
The included Caliburn A2 cartridge features a fixed FeCrAl UN2 Meshed-H 0.9Ω coil.
Pro-FOCS flavor technology helps deliver e-liquid flavors in a balanced and consistent manner.
Color Options
Neon Orange
Turquoise Blue
Classic Black
Graphite Gray
Sakura Pink
Gloomy Green
Daylight Walker
Midnight Rider
Compact KOKO Design
The square body structure ensures that the Caliburn AK2 is comfortable to hold in the hand and easy to carry.
Thanks to the silicone lanyard included in the package, the device can be worn around the neck
or quickly accessed whenever needed.
The e-liquid check window on the body helps monitor the juice level without removing the cartridge,
reducing the risk of dry hits.
Uwell Caliburn AK2 Features
Auto-draw system
Caliburn A2 cartridge compatibility
Pro-FOCS flavor technology
Visible e-liquid check window
Magnetic cartridge connection
One-handed top fill
Silicone carrying lanyard
USB Type-C fast charging
Caliburn A2 0.9Ω Cartridge
The Caliburn AK2 uses the 2 ml capacity 0.9Ω top-fill cartridge developed for the Uwell Caliburn A2.
The coil is fixed inside the cartridge and cannot be detached or replaced separately.
When the coil reaches the end of its life span, the entire cartridge is replaced.
When choosing compatible replacement cartridges, ensure that the product is labeled with Caliburn A2 and 0.9Ω.
Uwell Caliburn AK2 Specifications
| Dimensions |
43.5 × 11.8 × 67.9 mm |
| Net weight |
Approx. 35 g |
| Battery |
520 mAh built-in battery |
| Maximum output |
15W |
| E-liquid capacity |
2 ml |
| Cartridge |
Caliburn A2 0.9Ω top-fill cartridge |
| Coil build |
FeCrAl UN2 Meshed-H 0.9Ω |
| Operation system |
Auto-draw sensor |
| Filling system |
Top fill by removing the mouthpiece |
| Body materials |
PA, aluminum alloy, and PC+ABS |
| Charging port |
USB Type-C |
Package Contents
1 × Uwell Caliburn AK2 device
1 × Caliburn A2 0.9Ω cartridge (pre-installed)
1 × Caliburn A2 0.9Ω spare cartridge
1 × Silicone carrying lanyard
1 × User manual
The current store package does not include a USB Type-C charging cable.
How to Fill the Caliburn AK2 Cartridge?
1. Remove the cartridge from the device.
2. Push the black mouthpiece sideways to detach it from the cartridge.
3. Add e-liquid through the colored filling hole; avoid putting liquid into the central airflow channel.
4. Snap the mouthpiece fully back onto the top of the cartridge.
5. When using a new cartridge, fill with e-liquid and wait for 10-15 minutes before vaping.
Suitable E-Liquid Selection
The 0.9Ω cartridge of the Caliburn AK2 is designed for MTL use.
For the most balanced wicking, 50VG/50PG salt nicotine liquids or regular e-liquids suitable for MTL usage are recommended.
Very high VG-ratio thick e-liquids can slow down the cartridge wicking process and cause dry hits.
⚠ Charging information: According to manufacturer data, the battery can reach 90% capacity
in approximately 35 minutes under proper Type-C charging conditions. Use a quality, undamaged Type-C cable
with a compatible 5V USB power source. Do not charge the device in excessively hot environments or leave it unattended.
Frequently Asked Questions
Which cartridge does the AK2 use?
The Uwell Caliburn AK2 uses the 2 ml capacity Caliburn A2 0.9Ω top-fill cartridge.
Is the Caliburn A3 cartridge compatible?
No. Caliburn A3/A3S cartridges have a different structure and are not compatible with the Caliburn AK2 device.
Does the AK2 have a fire button?
No. The device operates automatically via an air pressure sensor when you inhale through the mouthpiece.
Can the wattage be adjusted?
No. The device automatically delivers the appropriate power for the cartridge and offers a maximum output of 15W.
Can the coil be replaced separately?
No. The coil is fixed inside the cartridge. When the coil reaches the end of its life, the entire cartridge is replaced.
Is the charging cable included in the box?
The current store package offering does not include a Type-C charging cable.
This product is intended for adult users only. Nicotine is addictive.
Product and package contents may vary depending on the manufacturing batch.
