Uwell has outdone themselves with this fantastic tank. The Crown 4 is an example as to how sub ohm tanks should be manufactured.

The build quality and machining is superb, threads feel great, tolerances are nice and tight. The tank just feels like a quality piece of merchandise. Starting from the top, one of the new features on this tank is the use of a cam-style locking mechanism for securing the fill cap. One quarter turn will open the tank, and the same will close it. Gone are the days of cross threading your top cap!

The Crown 4 has two glass options offering 5ml or 6ml capacity. Worth noting, the 6ml capacity glass is a bubble glass. Once you see the size of the coils that this tank uses, you'll surely be impressed with how they managed to keep the tanks capacity at a reasonable amount.

Coils for the Crown 4 do not thread in, but use a press fit and are held in place with o-rings. This means that the potential inconsistency of threaded coils is not a thing with this tank! There are currently 3 coil options for the Crown 4, covering a mid to high wattage range. The tank comes with 0.2ohm and 0.4ohm SS904 (stainless steel) coils, and also has a 0.23 mesh coil available. The mesh coil takes the cake and truly makes this tank a force to be reckoned with. Coil life on the Crown 4 is substantial and tends to vary. The two coils that come with the Crown 4 are temperature control compatible, and I found when running them in temp control their lifespan was lasting longer than my interest in whatever flavor I was vaping.

Even when vaped without temperature control, their lifespan is consistently over a week, and I have had them last up to 2 weeks with steady use.

Finally, the Crown 4 has incorporated a liquid reclaiming mechanism in the base of the tank. With this, as liquid slowly accumulates in the airflow section, small holes in the bottom of the coil coupled with a plastic piece in the airflow allow liquid to suck back up in to the coil. We have found that this tank is extremely unlikely to leak, and with the reclaim feature it doesn’t even seem to build up condensation.

Overall this tank is a phenomenal choice for anyone looking to vape a sub ohm direct to lung (DTL) device at a mid to high wattage.

Specs:

24.5mm at the base of the tank
28mm at widest point
5ml/6ml capacity
Quarter turn fill system
Self cleaning/juice reclaim system
0.2ohm SS904 dual coil: 70 watts – 80 watts
0.4ohm SS904 dual coil: 60 watts – 70 watts
0.23ohm Kanthal mesh coil: 60 watts – 70 watts

ARE YOU 18 OR OLDER?

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