Commercial characteristics
- Sponsor having loaned the product for the magazine: Myfree-cig
- Price of the tested product: 39.90 Euros
- Product category according to its selling price: Mid-range (from 36 to 70 euros)
- Atomizer type: Classic rebuildable
- Number of resistances allowed: 2
- Resistance Type: Non-Rebuildable Temperature Controllable Owners, Classic Reconstructible, Rebuildable Micro Coil, Classic Reconstructible Temperature Control, Rebuildable Micro Coil Temperature Control
- Supported Bit Type: Silica, Cotton, Fiber Freaks 1 Density, Fiber Freaks 2 Density, Fiber Freaks 2 Wire mms, Fiber Cotton Blend Freaks, Ekowool
- Quantity in milliliters announced by the manufacturer: 2
Reviewer comments on business characteristics
Always in a spirit of innovation, Wismec surprised us throughout the year with boxes and atomizers ever more sophisticated and actually changing competing productions.
This is still the case with Theorem and especially its new resistances: the Notchcoils.
Two novelties in one!
Physical characteristics and felt quality
- Width or Diameter of the product in mms: 22
- Length or height of the product in mms as it is sold, but without its drip tip if it is present, and regardless of the length of the connection: 32
- Weight in grams of the product as sold, with its drip tip if it is present: 30
- Material composing the product: Stainless steel, Pyrex
- Form Factor Type: Kraken
- Number of component parts without screws and washers: 6
- Number of threads: 2
- Quality of the threads: Very good
- Number of O-rings, Drip-Tip excluded: 4
- Quality of O-rings present: Good
- O-ring positions: Top Cap - Tank, Bottom Cap - Tank, Other
- Capacity in milliliters actually usable: 2
- Overall, do you appreciate the quality of manufacture of this product with regard to its price? Yes
Rating of the vapelier as to feelings quality: 4.9 / 5 
Reviewer's comments on physical characteristics and perceived quality
The Theorem is presented as a top-coil atomizer, that is to say the resistance above the e-liquid tank.
It is composed of a stainless steel body, the grade of which is unfortunately not communicated, on which the tube will slide, either in pyrex to reveal the entrails of the beast, or a second pyrex covered with an armor in perforated stainless steel incorporating the design of Notchcoils for increased strength. It will serve as both a reservoir and an atomization chamber.
Since we are talking about Notchcoils, it is the new resistors fitted to Theorem and developed by Wismec.
They are 316l stainless steel tubes with a length of 5mm for a diameter of 3.5mm, perforated around the perimeter by slots, having by their size / section a very large heating area.
They will therefore be compatible with the temperature control in SS316l mode.
Functional features
- Connection type: 510
- Adjustable positive stud? Yes, through an adjustment by thread, the assembly will be flush in all cases
- Presence of air flow regulation? Yes, but fixed only
- Diameter in mms maximum of the air regulation possible: 10
- Minimum diameter in mms of the air regulation possible: 0.1
- Positioning of the air regulation: The positioning does not effectively benefit the resistors
- Atomization chamber type: Bell type
- Heat dissipation of the product: Low
Reviewer's comments on functional features
The Theorem offers a T-shaped workstation, that is to say that you will find on each side of the plate two negative stations and a double central positive station.
The advantage of such a plate is the ease of placing and centering your Notchcoil, or even of mounting your own resistors (single or double).
It is equipped with an airflow positioned on the top-cap that we can choose to equip in single or double airflow with a ring provided.
The transition from double to single airflow will be done by unscrewing the top-cap of your atomizer, to change the airflow ring. Note that to adjust the opening of the latter, the unscrewing of the top-cap will be mandatory.
In simple use airflow, you will have the choice to pass, either by the Delrin piece (which will serve among others as a plug for the filling hole), or directly above the coil.
In dual airflow, you will operate both possibilities at the same time.
For filling, simply remove the top-cap to release a hole of 3mm allowing a quick and clean filling.
On paper anyway, theorem is very promising.
Drip-Tip Features
- Drip tip type: 510 Only
- Presence of a Drip-Tip? Yes, the vaper can immediately use the product
- Length and type of drip-tip present: Short
- Quality of the drip-tip present: Very good
Reviewer's comments on the Drip-Tip
Small drip-tip type shorty, mixing quite elegantly stainless steel and pyrex.
Evaluation of the packaging
- Presence of a box accompanying the product: Yes
- Would you say that the packaging is up to the price of the product? Yes
- Presence of a user manual? Yes
- Is the manual understandable for a non-English speaker? No
- Does the manual explain ALL features? Yes
Vapelier's note on packaging: 4 / 5 
Reviewer's comments on conditioning
Conditioning of the most complete. In addition to the eternal set of spare parts containing joints, screws and even tools, you will find two Pyrex tanks and a Pyrex / stainless steel tank, two Notchcoils already equipped with cotton (a tip, change it for a more qualitative fiber type Fiber Freaks) and a small manual in English illustrated and very understandable for Anglophobes.
Appreciations in use
- Transport facilities with the mod of the test configuration: Ok for a side pocket of Jean (no discomfort)
- Disassembly and cleaning facilities: Easy, even standing in the street, with a simple tissue paper
- Filling facilities: Super simple, even blind in the dark!
- Easy to change coils: Easy but requires emptying the atomizer
- Is it possible to use this product throughout the day with several vials of EJuice? Yes perfectly
- Was there leak after one day of use? No
- In the event of leaks during the tests, descriptions of the situations in which they occur:
Vapelier's note on ease of use: 4.6 / 5 
Reviewer's comments on the use of the product
The Theorem is a relatively easy to use atomizer. It comes with two sets of pre-fiber Notchcoils, one of which is a rising one, so you will have the choice to keep the wicking installed by Wismec or to put a fiber whose taste is no longer to prove (Fiber Freaks, bacon etc. )
Choose the type of airflow you like and fill.
Nothing wizarding in short.
For good use, I still recommend an electronic box in temperature control or not, the stainless steel working very well in both modes, while trying not to exceed 50W.
Beyond this power, Notchcoils tend to literally burn your juices, you have been warned.
The good news which will please some, it is possible to dry burner the Notchcoils, but you will have to do it at low power (20W) and without insistence on pain of seeing your tube fall apart before your eyes.
Recommendations for use
- With which type of mod is it advisable to use this product? Electronics AND Mechanics
- Which mod model is it recommended to use this product with? Electronic box to control the power, the temperature control will be a plus
- With which type of EJuice is it advisable to use this product? All liquids without problem
- Description of the test configuration used: eVic mini vtc and Minikin 120W
- Description of the ideal configuration with this product: Electronic box to have the hand on power, the temperature control will be a plus.
was the product liked by the reviewer: Bof, it's not the craze
Overall average of the Vapelier for this product: 4 / 5 
Link to a video review or blog maintained by the reviewer author of the review
The mood ticket of the reviewer
Well, that's where things get complicated and some people will blame me.
After several days of testing, several configurations, we have to face the facts… the Notchcoil Theorem couple do not go together!
Notchcoils, taken alone, are a great technological advance that will make life easier for many vapers. They work wonderfully, for example as a dripper (mounted in single or double), they will even be able to work in some bottom coil atomizers (beware of the too small available space of certain trays).
Theorem, equipped with a double vertical coil with a little power behind, will delight gourmet vapers or even lovers of cloud chasing.
But strangely, together, the vape is tasteless. Lack of potato, lack of flavor, not the foot what.
For me the real stars are the Notchcoils and the Theorem finally serves as a support, proudly showing off its interior to highlight the small stainless steel tubes!
A bit like Sonny and Cher, they look good together but the couple doesn't work…
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