Commercial characteristics
- Sponsor having loaned the product for the magazine: Heaven gifts
- Price of the tested product: 39 Euros
- Product category according to its selling price: Mid-range (from 36 to 70 euros)
- Atomizer type: Classic rebuildable
- Number of resistances allowed: 1
- Resistance Type: Classic Reconstructible, Classic Reconstructible Temperature Control, Rebuildable Genesys
- Type of wicks supported: Silica, Cotton, Fiber Freaks Density 1, Fiber Freaks Density 2, Fiber Freaks Yarn 2 mms, Fiber Freaks Cotton Blend
- Quantity in milliliters announced by the manufacturer: 5
Reviewer comments on business characteristics
The Siren 25 GTA is a genesis atomizer with a liquid reserve of 5ml.
Its diameter of 25mm allows to have a good autonomy and its tray type Kayfun offers a comfortable place of work for the assembly which is in simple coil fixed by a screw. The particularity of this atomizer is to be equipped with a genesis assembly but especially to have associated with a bell that is located in the center of the tank. This bell partly transparent, makes the coil visible on the outside of the atomizer at any time.
The Siren 25 is therefore a hybrid between the classic reconstructible atomizers and genesis atomizers, the plateau is located neither above nor below but in the center of the tank and we will see further what it changes.
This atomizer is available in two versions, first of all in diameter, that of the evaluation is 25mm, it is also available in 22mm with the same concept. The colors offered are black or stainless steel.
Physical characteristics and felt quality
- Width or Diameter of the product in mms: 25
- Length or height of the product in mms as sold, but without its drip-tip if it is present, and regardless of the length of the connection: 43
- Weight in grams of the product as sold, with its drip-tip if it is present: 73
- Material composing the product: Stainless steel, Pyrex
- Form Factor Type: Kayfun / Russian
- Number of component parts without screws and washers: 5
- Number of threads: 4
- Quality of the threads: Good
- Number of O-rings, Drip-Tip excluded: 5
- Quality of O-rings present: Good
- O-ring positions: Drip-Tip Connection, Top Cap - Tank, Bottom Cap - Tank, Other
- Capacity in milliliters actually usable: 4.5
- 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: 3.9 / 5 
Reviewer's comments on physical characteristics and perceived quality
The Siren 25 GTA is made of stainless steel with a reduced number of parts, since the partially transparent bell, fixed directly to the chimney and to the cape, forms a single part. The top with the base, they also constitute only one part, it is mounted on a central axis through which the air circulates.
On an aesthetic level it is a great success with this bell which offers almost total visibility on the assembly, which is also placed in the center of the atomizer. This is a great visual asset since the Pyrex tank also allows this appearance, it is nonetheless very exposed to the risk of shock.
All stainless steel parts have a matte black coating, apart from the mounting plate, on which the resistance will be achieved.
The two main threads, that of the base of the plate on which the bell is fixed and that of the top-cap on its cap for filling, are a marvel of precision, they screw and unscrew perfectly without any difficulty. The seals are correct and offer a seamless seal.
A well executed engraving, located on the cape, gives us the name of the manufacturer DIGIFLAVOR and on the base, we have the airflow adjustable by a ramp of four holes of different diameters to adjust the passage of the air. The pin itself, is regulated through a screw, under the tray, where you find engraved the number of the atomizer, its name "Siren 25 GTA" and some other information.
A product that seems robust apart from the very important Pyrex part, the materials and finishes are for some, well chosen and for others, neat.
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, and variable
- Diameter in mms maximum of the air regulation possible: 4
- Minimum diameter in mms of the air regulation possible: 0.1
- Positioning of the air regulation: From below and benefiting the resistances
- Atomization chamber type: Bell type
- Heat dissipation of the product: Normal
Reviewer's comments on functional features
Although this atomizer has an imposing diameter, it is not specially designed for cloud chasing, it is more flavor oriented. Indeed, the air circulation is only done on a single ramp, made up of four holes of diameters: 2.5 - 3 - 3.5 or 4mm as desired, on the basis of the atomizer, they are associated with an outlet of air under the resistance, which is also reduced with a kind of air filter that diffuses by precisely targeting the resistance, for a rather bluffing vaping result, with very round, almost cottony flavors.
With a reduced number of parts, the assembly of the atomizer is really simple, just like the assembly in simple coil which in spite of the system of locking by screw (cruciform) without air-wire, makes it possible to adapt son of wholesale diameter.
Another peculiarity on this Siren 25 GTA, it is this largely transparent bell, it offers the visibility on the assembly but during the vape, difficult to see clearly, because the vapor sticks on the walls. But the fact remains that the assembly is in the center of the tank and it is perhaps this feature that allows to have such a vapor, very round and almost cold because the heat is really well dissipated. The downside, it will not be possible to access the assembly without emptying his tank.
The filling operation is very simple, by unscrewing the top-cap, which has small notches to easily grip it, you reveal 2 very large lights to fill the tank with a pipette, a syringe, a dropper .
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: Medium
- Quality of the present drip-tip: Good
Reviewer's comments on the Drip-Tip
Two different drip-tips are provided in the pack, one, made of medium-sized stainless steel, fitted with a plastic end is of a very standard rectilinear shape. Its opening is medium with an internal diameter of 5mm to associate it with the airflow openings of 3.5 or 4mm.
The second in Delrin is shorter, slightly conical in shape, its internal opening is smaller with an outlet diameter of 3mm, it is more associated with an airflow opening that corresponds to the first or second hole (at 2.5 or 3mm).
Both are comfortable for a comfortable grip in the mouth but they are more suitable for normal inhalation, direct inhalation is a little more difficult.
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? No
- Is the manual understandable for a non-English speaker? No
- Does the manual explain ALL features? No
Vapelier's note on packaging: 2 / 5 
Reviewer's comments on conditioning
In a box red and white cardboard, on two floors, we find in the foreground, the atomizer with a spare tank and the second drip-tip. The three pieces being comfortably wedged in a white foam which protects each element correctly.
Below, we discover a small bag containing a "T" screwdriver, two spare screws and additional seals.
Unfortunately no instructions are provided, you will have to be content with the few explanations given on the back of the box which are too succinct for my taste and what is more, are written in English. This breach of current commercial rules will probably backfire on manufacturers who will soon no longer be able to offer their products, without putting the suppliers / distributors who will offer them at risk, I doubt that they will accept to see their acquisitions confiscated with serenity, during future checks, TPD obliges.
Appreciations in use
- Transport facilities with the mod of the test configuration: Ok for an external jacket pocket (no deformations)
- Disassembly and cleaning facilities: Easy, even standing in the street, with a simple tissue paper
- Filling facilities: Easy, even standing in the street
- 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: 4.2 / 5 
Reviewer's comments on the use of the product
The use is so simple that the Siren 25 GTA may be a first rebuildable. Single-coil mounting is the same as a Kayfun 5, just place the resistor in the center of the tray and attach the tabs around each screw before tightening.
I made two different montages with a resistive type "fused" for a resistive value of 0.65Ω. The handling is quite simple is the wire is easily housed, however this resistive requires a higher power than a conventional wire and although I could not see any dry hit or leak, it seems to me that the value was still a not too low with appreciable flavors certainly, but slightly saturated. For the steam, it is very well served, and it remains quite classic in short.
I tested a second mount with a Kanthal in 0.5mm diameter for a total value of 1Ω. It is quite surprising because there, I could draw a parallel with a famous Taifun who, I remember, restored a compact vapor, cavernous and felted, even for round and pleasant flavors in the mouth. Yet the concept is quite different, but this Siren 25 is well and truly built for flavors.
Easy to assemble, the insertion of the locks is just as much, two notches on the tray, provided for this purpose impose evidence, including in each of them wicks down to the base. It is then sufficient to soak the capillary to put the tank to close by screwing the bell. Then to complete the operation, close the airflow and fill the tank from the top to finally screw the top cap. All you have to do is to steam and enjoy your liquid, taking care to position the air-hole that suits you.
Difficult to make easier for a rebuildable: simple coil, few parts to assemble, easy filling ...
Everything is easy.
On the other hand, there is no possibility to regulate the flow of the liquid, but I confess not to have felt the need, the access to the assembly during vape is not possible, it is necessary to empty the front tank . And the airflow ring turns without difficulty making a rattling noise on each notched position.
I didn't see any leaks or oozes and no dry hits either. However, this atomizer requires to stay on a resistive value range between 0.7Ω and 1.2Ω because the airflow is limited and does not offer the possibility of going below 0,7Ω without altering the flavors. The heat dissipation is very well done since at no time did I feel excessive heating.
A good product that stays in a reasonable price in 25mm in diameter.
Recommendations for use
- With which type of mod is it advisable to use this product? Electronics AND Mechanics
- What mod model is it recommended to use this product with? a mod with a diameter of at least 25 mm
- With which type of EJuice is it advisable to use this product? All liquids without problem
- Description of the test configuration used: Described in the use
- Description of the ideal configuration with this product: with a resistance between 0.7Ω and 1.2Ω
was the product liked by the reviewer: Yes
Overall average of the Vapelier for this product: 4.4 / 5 
Link to a video review or blog maintained by the reviewer author of the review
The mood ticket of the reviewer
Of course, this Siren 25 requires me to draw a parallel between two well-known atomizers that are precursors of the reconstructible, they are the very famous: Kayfun and Taifun.
Side assembly, Kayfun I think with a simple coil fixed by two screws, the principle is identical and well honed. However the plateau seems more accessible and much more convenient. For the return of steam and flavors I really felt the same as on Taifun with a classic aspiration and a moderate steam, the flavors are very present and especially, I have a vape in the mouth that is confined, cottony and quite compact.
Surprisingly, a genesis type atomizer can look so much like those peers which are classic atomizers, with a tray that sits in the center of the tank. The look is original, by offering a very transparent bell which unfortunately does not leave much visibility during the vape, opacified by too dense vapor in the evaporation chamber.
Value for money is reasonable for an atomizer made for a quiet vape over a range of moderate resistive values.
Sylvie.I
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