Uwell - Crown IV Sub Ohm Tank

Brand: Uwell
Regular price
Regular price
Sale price
Delivery Timer
soon Get it
Free Delivery
Price Match Guarantee Learn More
Earn Rewards
Earn upto 5% CASHBACK with this item
Not a Member? Sign up today.
Authorised Retailer
  • About This Product
  • Question and Answers
  • About Uwell
  • Delivery

About This Product

The Crown IV sub ohm tank is vaping royalty from Uwell. The tank has a 2ml capacity and uses the Pro-Flavour Optimization Core System (Pro-FOCS). Uwell’s patented Pro Flavor Core Optimization System (or Pro-FOCS) recycles the air through the core of the atomizer twice to saturate your draw with additional flavour and the tank is also available as part of the Uwell Crown IV Kit.

Which coils fit the Uwell Crown 4 Sub Ohm Tank?

The Uwell Crown IV coils which are compatible with the Uwell Crown IV Sub Ohm Tank are the UN2 Mesh 0.23 Ohm, Dual SS905L 0.2 Ohm or Dual SS904L 0.4 Ohm Coils.

Please note: The Uwell Crown 4 Tank is supplied with a 2ml TPD glass only. Bubble glasses will not fit this tank.

More Details

The UWell Crown IV Tank:

Product More Details Image 1

Introducing the Crown-IV by UWell, a Sub-Ohm Mesh Tank with immense flavour and vapour production.

Product More Details Image 3

The UWell Crown IV tank comes in a variety of different colours, including Red, Silver, Blue, Green, Gold and Purple, to suit any style, any time!

Product More Details Image 5

The Crown IV tank comes with a 5ml tank as a standard for the US editions and a 6ml tank. A 2ml capacity is available for the European market (TPD).

The Crown IV tank measures up at 54.8mm in height, 25.7mm in diameter and weighs in at 55g. Stylish and attractive, The UWell Crown IV kit is the perfect companion for any occasion!

Product More Details Image 7
Product More Details Image 8

Condensation or leakage is a thing of the past with the Crown IV tank, thanks to it's patented juice recycling system, allowing any juice that collects in the bottom of the tank to be re-absorbed and re-used inside the tank. This ensures that you get the best out of your e-liquid, even when it comes to capacity!

Product More Details Image 9

The New UN2 mesh coils have a few features to make them a cut above the rest, including wider juice channels as well as the new space-age mesh coil material. The new mesh coils heat up a larger surface area, vaporizing more liquid and providing a significant increase of flavour as well as vapour production.

Product More Details Image 10

The UN2 coils also come in a 904L steel wire material, commonly used in Swiss luxury watches and come in either 0.2 and 0.4 Ohm variations.

Product More Details Image 11

The top cap is also optimised for quick filling and can simply be opened by unscrewing 90 degrees. The fill ports are big enough to fit all standard e-liquid bottles so re-filling becomes a breeze.

Product More Details Image 12

The UWell Pro-FOCS flavour technology is integrated into each Crown IV kit and allows for excellent flavour production.  

Product More Details Image 13

The Kit Includes:

1 x Crown IV Tank

1 x Spare Glass Tube

1 x 0.4 Ohm Coil (Pre-installed)

1 x 0.2 Ohm Coil

1 x Pack of Replacement O-Rings

1 x User Manual

1 x Drip tip Cover

Questions and Answers

What makes a Sub-Ohm tank?

First of all, let's clarify what Ohms are. An ohm is the measure of electrical resistance of the coil inside an atomizer or tank. It is normally shown using this symbol - Ω. The more wraps a coil has and the thinner said wire is, the higher the resistance and fewer, thicker wraps of wire tend to be a lower resistance. Any atomizer coil with a resistance bellow 1.00 ohms such as (0.50, 0.15, etc.) is a sub ohm coil.

What are the best liquid to use on Sub-Ohm tanks?

DTL (Direct To Lung or most commonly known as Sub-Ohm) tanks are better used with VG-based E-Liquids, as they are much thicker than PG based liquids, and more intense than MTL. They are also best used with a lower nicotine strength, increasing the flavour production. Direct-To-Lung tanks use thicker e-liquids, like those comprised of 60% VG or higher percentages. This delivers a lower throat hit, as well as an enhanced flavour.

Should i go for Nicotine Salt or Pure Base Nicotine?

Nicotine Salt is a “newer” form of nicotine that has been finding its way into eliquid over the past few years. While Pure Base tends to be quite harsh, Nic Salt is much smoother on your throat while inhaled, and due to this, most Nic Salts E-Liquids contain a higher level of Nicotine. Also Nic Salts effect on your body is different; while Pure Base Nicotine gives you a slower and constant Nicotine dose, the first gives you a much faster Nicotine Rush, which your body assimilates at a quicker rate. So, if you are looking to stop smoking, and afraid of Nicotine craving while still wanting a smooth vape, Nic Salts should be your pick, but if you are looking for a harsher throat hit at a lower Nicotine dosage, sticking with Pure Base could be the better option.

How long do coils last?

Most coils can last up to  7-14 days, although that approximation depends on how often you vape, and your vaping habits. An important aspect is knowing the signs of needing to refill your tank, in order to avoid firing the device while there's no liquid, and consecutively burning the cotton of the coil. Two warning signs that you need to change your coil is a reduction in flavor production, and a lower amount of vapor emitted from your tank.

Brand Info

Uwell is a premium hardware manufacturer which boasts of flavour-producing machines made to last and to put a smile on the face of the user.


Royal Mail 48 Hour Tracked

2-4 Working Days

Dispatched same day if ordered before 3 pm Monday to Friday

FREE on orders over £40

£1.99 (approx)

Royal Mail 24 Hour Tracked

1-3 Working Days

Dispatched same day if ordered before 3 pm Monday to Friday. Dispatched same day if ordered before 11am on Weekends.

FREE on orders over £60


DPD Next Day Tracked

1 Working Day

Orders placed before 4:00pm (Monday to Friday) will be dispatched on the same day. Order placed after 4:00pm will dispatched next working day.(No Weekend Deliveries).

FREE on orders over £75


DPD Next Day Tracked (Saturday and Sunday)

1 Working Day

Orders will need to be placed before 4pm Friday, for a Saturday delivery (on the weekend delivery service). Orders placed before 2:00pm (Saturday - Sunday) will be dispatched on the same day. Order placed after 2:00pm will dispatched next working day.