Fumytech Crystal Ball RDTA Review

The Crystal Ball RTA by Fumytech is a glass and stainless steel orb that quickly converts to an RDA with a simple twist.


Fumytech Crystal Ball RDTA Intro

Right out of the box, the new Fumytech Crystal Ball is a pretty fair rendition of a miniature glass orb in monochrome black. Crafted from stainless steel, the fit is executed pretty well but not perfect, with a noticeable step between the top cap and tank rather than a smooth, seamless transition.

Measuring 34mm at the widest point of the tinted Pyrex tank and narrowing to 24mm at the base, the Crystal Ball will fit nicely on most mods without any dreaded overhang. Remember though, at 34mm the glass globe will overhang a 26mm mod by 4mm, so if you knock it over on a hard surface there is a high probability that it will break. The included replacement glass allows you one “oops”, if you get careless again – you’re done.

The Crystal Ball features bottom adjustable airflow and a Velocity style deck with large post holes making it simple to build and wick. When mounted on your mod, you can easily twist the tank to adjust the juice flow from the 4ml tank, or close it off completely and use the Crystal Ball as a dripper.

The review sample was black, but pictures also show a version with orange glass and drip tip. The black version is currently available for preorder at around $40US.

Fumytech Crystal Ball RDTA Specs and Features

Kit Content

  • Crystal Ball
  • Spare glass
  • Spare o-rings
  • Four spare grub screws
  • Allen key
  • Four Ni80 staple coils
  • Japanese organic cotton


  • Diameter: 34mm (globe) / 24mm (base)
  • Height: 44.5mm
  • Material: Stainless steel
  • Pyrex tube
  • POM
  • Capacity: 4ml

Notable Remarks

First things first

Removing the top cap from the Crystal Ball to fill it was a real pain in my ba…wait…let’s just say it was challenging.

The drip tip is keyed to fit into the top cap so theoretically all you have to do is grab the drip tip and turn but in reality I found it tough to get a good grip. The cap was TIGHT, and when things started to turn, the entire tank came apart. Once I got the top cap off and reassembled the tank, I made sure not to over-tighten the cap and it worked OK on subsequent refills.

Let’s get this ball rolling

With its ubiquitous Velocity style deck, building the Crystal Ball was simple. My dual coil build measured 0.23Ω using two of the supplied Ni80 staple coils. Wicking was a breeze, and I made sure that the four wick tails were in contact with the juice holes on the sides of the deck to prevent leaking.

Now, I am not a big RTA user and prefer to stick with Genesis style RTAs like the Geekvape Avocado which are much more forgiving, i.e., any dope can wick it correctly. With other RTAs I haven’t been so successful, so I was thrilled when I got the Crystal Ball to perform leak-free on my first attempt.

I filled the tank with 80% VG cinnamon toast crunch and started at 50W with the airflow wide open. The Crystal Ball performed well, with good vapor, nice flavor and no dry hits. As I vaped, I slowly increased wattage until I hit 80W and the Crystal Ball performed great.

Of course, this review wouldn’t be complete without using the Crystal Ball as an RDA. After all, according to the Fumytech packaging, “When you shut down the juice flow, it will be an RDA”. So, let’s check it.

Drippin' in an RTA

The juice flow control is simple to operate by turning the bottom portion of the tank. I found the easiest way to use it is with the Crystal Ball mounted on your mod – you simply grab the tank and turn it clockwise while viewing the juice ports through the glass tank.

Once the ports were sealed, I dripped through the drip tip opening and as expected, the Ball worked like any other RDA. The performance was no different than it is as an RTA, but this feature allows you to switch up your juice from the one you have in the tank, which seems to be the only reason to use this feature. Still, it’s pretty cool.


  • Truly works as an RDTA (dripper and a tank)
  • Feels substantial
  • Easy to build and wick
  • Nice vapor and flavor
  • No dry hits
  • No leaks
  • Monochrome black color scheme looks slick


  • Tolerances are too tight
  • Looks odd on box mod (much better on tube mech)


The Crystal Ball is easy to build and performs well enough, once you finally get the top cap removed. There is no denying that Fumytech nailed the look they were going for, and I like the tinted glass with the black finish.

However, closing off the juice flow and using it as an RDA is not a big selling point for me; I can drip into a Limitless RDTA or Avocado if I want to, but why? And I think the Ball would be much more fun if you could see the coils through the glass.

Would I buy one?

My Magic 8-Ball says: outlook not so good.

The Crystal Ball looks a bit peculiar on my box mod and seems gimmicky yet it delivers everything as promised and almost looks OK on copper and black tube mods. I suppose if you are tired of the same old tanks, this is one alternative.

What do you guys think?…are you intrigued enough to give the Crystal Ball a shot?

Gary Joseph
Gary is a retired technical writer residing in the metro Detroit area. Besides vaping, and writing for Vaping360, some of his other interests include motorcycling, watch collecting, bicycling and fitness.

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There’s a dragonball version. That’s all i need to know lol