The Wotofo Serpent SMM: A result of two forces meeting and creating one hell of an RTA!

Today we are looking at the Wotofo Serpent SMM RTA. Which is a collaboration between Matt from the world famous ‘Suck My Mod’ YouTube channel and Wotofo. It boasts such great features such as a GTA style deck, ambidextrous coil clamps and four, YES FOUR airflow holes hitting that single coil build in the centre.Wotofo-Serpent-Boxed

Wotofo is a company based in China and have been operating since 2009. Since then they have released atomisers such as the Troll V2Freakshow and Sapor RDA’s and the original Serpent RTA as well as the Troll and Conqueror RTA’s.

As always my opinions are honest and my own.

Keep scrolling to see The Serpent SMM RTA in action with my video review..

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What’s In The Box

  • Serpent SMM RTA
  • Spare Parts Bag
  • User Manual
  • Gift Box with Anti-Fake label
  • Japanese Cotton
  • Prebuilt twisted coils
  • Ultem Drip tip
  • 2x Spare Tank GlassWotofo-Serpent-Unboxed


  • 4ml juice capacity
  • 24mm diameter
  • 510 threading connection
  • 316 stainless steel construction
  • Removable 510 Ultem drip tip
  • Special single coil design for easy building
  • Two post build deck for single coil build
  • Two 4mm diameter wicking ports
  • Peek insulator
  • Direct Airflow to Coil Design
  • Dual Airflow Slots
  • Adjustable Airflow Control Ring

Build Quality & Design

We’ll start from the top and make our way down the device.Wotofo-Serpent-Parts

Drip Tip:

So, the drip tip is made of Ultem and has your usual 510 sized connection on the bottom along with two o-rings to secure it into the top cap of the atomiser. It’s is quite a wide bore drip tip at the top though, but it doesn’t feel awkward at all in the mouth at all.

Top Cap/Filling Ports:

The top cap is made from Stainless Steel and extremely easy to remove without the need of any knurling. The threads are clean and smooth. Simply unscrew the top cap and you’re met with two large kidney-shaped filling holes which are decently sized to allow filling from needle tip bottles all the way up to your unicorn bottle tops and glass droppers.

I’ve had no issues whatsoever when filling up this RTA.Wotofo-Serpent-Filling

The Inner Barrel:

The chamber/barrel on the inside of the tank, again is made from stainless steel and has “Serpent SMM” and the Suck My Mod logo engraved into it. This chamber encapsulates the build deck. On the inside it is conically shaped, which is well known to be great for producing exceptional flavour on an RTA.Wotofo-Serpent-Chimney Wotofo-Serpent-1

The Build Deck:

Well… This is a thing of beauty and unlike anything I have seen before. It has a two post design and has two slots on each post to allow left handed and right handed wrapped coils to be installed with ease.

Or if you’re feeling adventurous, how about throwing a dual vertical build in, or even a stacked coil build?Wotofo-Serpent-Build7

Each post has two airflow slots built into them, so it comes from the sides of the base of the RTA, then comes up through the posts, and directly onto the coils installed on the deck. In turn, this offers a leak free vaping experience, no matter how good or bad your wicking technique is. But please try to get it as spot on as possible to get the best performance from the Serpent SMM.Wotofo-Serpent-Deck1

Below the posts, you have a raised deck with two holes in the base. This is where you put your wick into the reservoir below. So it’s pretty similar to how the new generation of RDTA’s work, but the tank surrounds the build deck rather than being completely below it.Wotofo-Serpent-Deck3Wotofo-Serpent-Build12

The Airflow Control & Base:

So at the bottom of the Wotofo Serpent SMM, we have the airflow control ring. This ring is removable for ease of cleaning and is held in place with two clear o-rings. It rotates roughly a quarter of a turn to go from fully open to fully closed.

I found it slightly stiff at first, but when the o-rings get a bit of e-liquid on them, they free up nicely and turn with ease. The amount of airflow these holes allow in is absolutely spot on, and if you close them down enough, you can get a nice, tight MTL vape from the atty!Wotofo-Serpent-Airflow

The base of the Serpent SMM is pretty much the same as most other Wotofo atomisers. It has Wotofo and Suck My Mod etched into it along with the CE and bin logos.

The threads on the 510 are pretty nice and smooth and the gold plated positive centre pins on both items I have received protrude from the negative a nice amount, so I would be happy using mine on a hybrid mechanical mod if needs be.Wotofo-Serpent-Base1

How Does the Wotofo Serpent SMM RTA Perform?

In this section I will be using the coils supplied in the packaging by Wotofo. They are flapton coils and come out to roughly 0.2Ω each.

Ease Of Build On The Serpent SMM

I thought this RTA would be awkward to build on, but it was anything but awkward!

You simply undo two of the Phillips head screws, put the coil into the slots at an angle, twist the coil so it is perpendicular to the deck and then tighten down your post screws. Job done!Wotofo-Serpent-Build2

Now the important part is to cut the legs as close to the posts as possible as having any excess coil leg sticking out the end will short the coil out on the barrel.

So just simply cut them, then run your finger over the post to see if anything is sticking out. If there is, get a screwdriver or something metallic and bend the protruding leg into the slot.

I have built on the Serpent SMM multiple times and haven’t experienced any shorts at all, but it is possible that it may happen if you forget to clip and bend over the legs of your coils.Wotofo-Serpent-Build3

Flavour & Cloud Production

From an RTA, I would say that this is one of, if not the best flavour I have got from an RTA before.

And this is going up against the likes of the DotMod Petri RTA which I believed was unbeatable!

So yeah, that really says it all. The flavour from the Serpent SMM is exceptional. The cooladas are cool, the menthol is fresh, the custards are thick and creamy and the fruits are sweet and mouth watering.

I honestly have nothing bad to say with regards to flavour production on the Serpent SMM.

As for clouds, they’re alright. Nothing special or mind blowing. Just normal vape clouds. I wouldn’t even say that this is a cloud chasing RTA, so clouds aren’t important to me whatsoever. Its all about the flavour on this one!

The Serpent SMM On Various Devices

Tesla WYE 200w:Wotofo-Serpent-Tesla

Lost Vape Drone BF:Wotofo-Serpent-Drone

See The Serpent SMM RTA In Action With My Video Review

What I Like

  • Flavour
  • Clouds
  • Airflow
  • Ease of filling
  • Ease of building

What I Dislike

  • The Ultem drip tip (and that’s me being EXTREMELY picky)

Final Review Verdict

Once again, Wotofo have made an absolutely cracking atomiser! I would highly recommend the Serpent SMM to anyone who is looking for a single coil RTA with substantial amounts of flavour.

Honestly, a massive high five to Wotofo and Matt from SMM for releasing this RTA!


Talk to us! Have you tried the Wotofo Serpent SMM? Let us know your thoughts in the comments below!

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Build Quality
Ease of Build
Likelihood Of Replacing If Lost Or Damaged
Hi, my name is Dean and I have been vaping since April 2014. I decided to start reviewing back in mid 2015 as my friends kept asking me about different e-liquids I had tried and whether they were worth buying. So I thought I'd start on Instagram writing written reviews for them to read. Then several months later, I saw that people were publishing reviews on YouTube, so in late 2015 'TheDevilVaper' was born! And since then, I have built a following across social media and I'm reviewing anything from starter kits to mech mods. Budget e-liquids to premium flavours and prebuilt coils to carry cases. To me, vaping is more than just a way to quit smoking. It is now a hobby. And a hobby that I have great pleasure in doing! And if my reviews help people ditch the cigarettes, then it's a job well done. TheDevilVaper


  1. I’ve been using this RTA for a couple of weeks so far and have had no issues with it, but the flavour i’m getting does not seem to be as good as my other drippers/RTA’s.

    What ohm/Wattage would you recommend for this?

    • Hi Connor and my apologies for the late response.
      I personally would advise a build between 0.2 and 0.5 ohms.

      What coils and wick are you currently using in the RTA?

  2. Tried the Serpent SMM totally disappointed , it leaks, doesn’t Vape right, eats juice I think I will stick with pre built coils in the future. Be happy if I get my money back

    • Hey Lee! Sorry to hear that you are having issues with the Serpent SMM. The leaking should be down to a wicking issue. I have done a video on YouTube showing how to wick the SMM and it has worked perfectly for me every time. As for juice usage, this is down to the build that is on there, so the lower resistance the build is, the more juice it will drink. Try using a higher ohm build and see how that goes.
      If you have any further issues, please do not hesitate to get back in contact.



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