I started vaping a month ago. So, I bought the Nautilus 2, specifically the Rainbow color. During the first few refills, sometimes the coil would unscrew along with the chimney. However, I didn't have any issues with leaking. Just after returning from a trip, I went and bought a second one as a spare, specifically the Stainless steel version.
I filled it up with the spare coil and the next day when I woke up, for some reason, all the liquid had leaked out. I reinstalled the first one I bought (Rainbow) and it's working fine.
On Monday, I will buy the Zenith Pro by Innokin for its larger capacity (5.5 ml) compared to the 2 ml of the Nautilus 2, as well as for easier and safer refilling since it eliminates any potential leakage.
I don't regret buying the Nautilus 2 Rainbow as it served me well for 30+ days, especially during the trip.
However, I do regret buying the spare Nautilus 2. The Nautilus 2 Stainless steel version.

The two stars only for the taste and the durability of the coils, otherwise completely useless, leaks, difficult filling for strong nerves..........

Unbeatable vaporizer with intense flavor performance. It does not have significant leaks if you are careful during refilling. With proper placement of the resistance (which is really not difficult), the only leakage you will notice will not be more than a few drops

No leakage ever, not even once and many times accidentally lying in my pocket.
Very good vapor, very good taste and economical in liquid.
Some say that the painted ones, except for nickel, eventually fade. Not yet for me.

Rubbish!!!
With every filling, you need a pack of tissues.... it leaks from the air holes... VERY WET though....
I thought it couldn't be... maybe I'm doing something wrong until I saw your comments....
Such a waste of 30 euros..!
UNACCEPTABLE

I don't know what to write first about this masterpiece!
I used to smoke Old Holborn White 40g. In 3 days...
For the past 15 days, I have been using the Nautilus with the Bebeca Bal 1.2% liquid...
15 days and the coil is literally working like a clock...
I add liquid every night and I have no leakage...
The 3,200mAh battery lasts me 3 to 4 days with the 1.8Ω coil at 11.5 watts!!!
I haven't smoked a single cigarette since then and when I smell it now, it stinks...
P.S. If I didn't get this one, I would have gotten the 5ml on the spot... So I wouldn't have to refill every night

They gave it to me as a gift...
I wouldn't buy it after reading the negative comments.
I'm writing because I believe it is unfairly criticized.
I've been using it for 6 months. Zero leaks.
The taste is very good, moderate vapor (0.7) resistance.
Now, for those who have leaks, I believe
they tighten the bell too much.
(What do I do).
Fill it up to the top thread of the resistance.
I tighten it slightly, and then unscrew it a bit.
This is to prevent the rubber band from getting twisted.

Guys, I don't know what you're saying, I tried everything! My leaks drove me crazy, is it really that difficult, man, to make something properly? Money wasted

I have had it for 6 months. At first, I had several leaks. I couldn't stand it. It was wet everywhere. What should I do, close the air, turn it upside down, nothing. Strangely enough!!!!... when I removed the outer flange (bottom) and used only the inner flange, the glass one (top) and tightened it well, there have been no leaks for 5 months now. (It's worth a try). Very good tobacco flavor. (Slightly better flavor - with the same liquid, resistance 1.8 ohm - than the Nautilus X, which, however, has almost double the resistance lifespan). The main problem with the Nautilus 2 is in filling the liquid, where you have to unscrew the tank from the mod and then the bell. Another problem is the 1+ something ml of liquid it takes, so you have to refill frequently.

Many and annoying leaks, without reason or cause. The coils do not always screw well and this creates problems. Every time I refilled the liquid, the vaporizer "spit" liquid from the mouthpiece, sometimes a little and sometimes VERY MUCH. The taste is very good, but due to the leaks, it does not inspire confidence, especially for someone who wants to put it in a pocket for example. Personally, I put it aside, I will only use it indoors as a second and especially in intense flavors (its strong point), I got a ZENITH and found my health...

I found it disgusting compared to the Nautilus 5ml that I already use for vaping. It holds less liquid, it leaks liquid shamelessly whenever I unscrew it to add liquid, it becomes a mess, and I always have to have a tissue in the other hand to clean it. It is difficult to screw/unscrew and it is smooth everywhere, you have nowhere to hold it to screw/unscrew it and it slips like a snake.

You will be amazed by its usability and simplicity: Use a wrench for the tube and a monkey wrench from the other side to screw it!

I have used it very little and I am thinking of giving it as a gift to someone and getting a couple of kilos of potatoes for free (that's how much it's worth normally).

Unacceptable vaporizer, I would easily compare it to an oil can, pure disgust - construction for carnivals...

I have had it for 2 months and now I can say, if you want to throw away 25 euros and fill your hands, pockets, and bags with leaking liquid, then this is the ideal one! It works correctly 2 out of 10 times I fill it. Obviously, I will not use it again. It unscrews difficultly, screws even more difficultly, and runs like a river. From the heroic K3 to the Aspire, I cannot understand how they came up with this.

It is a shame that such things are circulating in the market. It is a shame for those who sell it and do not tell the world what is going on.
Stay away

The worst one that passed through my hands, not in terms of taste.
The bell does not unscrew at all and in a month the airflow ring broke.
I wasted 28 euros for nothing!!!!!

With the 1.8 resistance, it simply performs amazingly... I can say that the flavor is even better than some RDA flavors I have... As for the economy, it's simply unbeatable... You get a 100ml liquid and with proper use, it lasts you for over a month... I recommend it to beginners and non-beginners alike... The fact that I switched back to factory-made after 2 years of rebuildable says a lot for me (my opinion always)

Terrible vaporizer, every time you try to fill it, liquid runs everywhere. The worst thing I have ever bought

Excellent throat hit and flavor, affordable in both liquid and coils. No leaks, just need to deal with it a little. It's worth buying

Beautiful in appearance and gives good taste/sensation BUT it constantly leaks and opens HORRIBLY DIFFICULTLY in such a foolish way that when you try to unscrew the lid to fill it, the entire atomizer unscrews from the mod. I had to replace it because of this, as I had spent countless hours struggling and was constantly frustrated. I really can't understand how they released this product into production and gave it to the world to struggle with.

I have it for quite some time.. Good throat hit. Good flavor, but after filling or opening for filling, you need to look for papers to wipe yourself. Also, it has an issue with opening, it almost gets stuck every time and only opens with tweezers

Very good cigarette, it's a shame that I can't give it ten stars. It doesn't lose a drop and has a perfect taste for a cigarette. Get it with your eyes closed

I have had it for about 1 year. Except for the 2-3 first times when I had some leaks, it works flawlessly. I fill it normally, not upside down. No leaks, very good taste.

I tolerated it for two days. On the third day, I threw it in the trash. I admit that I was unlucky, okay. But when you read thousands of complaints on forums from all over the planet, luck is not the issue. I have tried 6 vaporizers in 3 years, and this one is by far the worst I have seen. I won't bother to figure out what's wrong, the company should have done that before releasing it. All the rest, turn it upside down, open one, close the other, be careful with the spare parts, it's all just nonsense for a simple refill. It's like playing Russian roulette with every refill. Will it work? Will it not work? Will the head unscrew along with the cap and ruin everything? I won't even ask about leaks. You will definitely need half a pack of tissues per day.

One of the best cigarette vaporizers!! It's worth its money, there are no leaks as long as the filling process is done correctly. I am completely satisfied!!

I have had it for 1 month and I am forced to buy another vaporizer again.. Burnt coils, leaks, and problems with the opening. Unacceptable vaporizer.

I had it in my possession for about 4-5 days, and I gave it away. It has leakage issues. Or at least some parts do. I don't know... Mine was leaking. Obviously, I did what the reviewers below describe, but still the same.

I got the ijoy elf 2ml which is exactly the same, with the SAME coils, and I found my salvation! I fill it on the go. No leaks, no opening-closing airflow, no turning it upside down, no putting on and taking off rubber bands, nothing. You just fill it from the top, close it, and vape! It's that simple...

This one here, it's not worth it... It only has... the reputation!

I fully understand those who threw it away. What's the point of having good taste when it constantly leaks? It's not a matter of misuse when the issue is discussed everywhere you look, in Greek and international forums.

Disappointingly poorly designed product from a company with such a good reputation...

Very nice vaporizer! There are no leaks. Maybe we should do it more carefully... The only negative thing for me is that it holds 1.5ml of liquid up to the top of the coil to avoid leaks