Start your vaping experience with the necessary know-how


coil master

Coil Master SEB Review

CoilMaster SEB

Today we will be having a look at the Coil Master SEB (SS E-juice Bottle). The SEB is a carrying container/bottle made out of stainless steel that allows you to carry your e-juice safely without any leaks or fear of breaking. For me personally this was one accessory that was missing from my daily setup and I have always wanted something to carry my e-juice without worrying that it will break if I drop it or it would leak when I least expect it.

CoilMaster SEBIt seems that Coil Master have managed to come up with another interesting product and to be honest this was something that was lacking on the market for a while. The only alternative I can think of at the moment is the U-CAN from Innokin however from my point of view the U-CAN doesn’t even come close in terms of quality of the build to the SEB from Coil Master. You’ve got to trust me on this one, the level of detail that is put into this product is simply beyond every expectation I had.

CoilMaster SEBThe SEB comes in a nice cylindrical package and you also get a user manual and nice pouch to keep those scratches away. I have been using mine for about a week or so and haven’t noticed any marks on it whatsoever but I am sure this depends on how you take care of it in the long run. For example I wouldn’t recommend carrying this next to a bunch of keys if you want it to look brand new.

Spec wise, here is what the SEB has to offer:

  • Stainless Steel Body
  • Corrosion free
  • 20 ml capacity
  • Portable, snap hook included
  • Shockproof
  • Adjustable e-juice flow rate (max 1.25 ml per button press)
  • Precision spring loaded tip
  • 26 mm in diameter and 91.6 mm in height

CoilMaster SEBBox contents:

  • 1 x Coil Master SEB (stainless steel)
  • 1 x pouch
  • 1 x user manual
  • 1 x snap hook (silver color)

As mentioned in the specifications the e-juice flow rate can be adjusted, at the bottom of the SEB you will find ring that allows you to control how far along the button can be pushed thus allowing more or less e-juice to be dispensed. The maximum you can get out of it is 1.25 ml per button press. The button can be locked by unscrewing the knurled bottom ring.

CoilMaster SEBThe SEB has a window on each size stretching nearly the full height of the container, each window has laser edged markings so that you can see how much e-juice you have left. The top of the SEB has a cover to prevent e-juice from leaking out or come in contact with any outside elements. On the top cover you have a key ring attached to a snap hook which makes it very convenient for carrying this with you. The top cap also has the role of protecting the spring loaded tip: the top cap simply screws down – the threading on this is good.  Filling the tank is very easy and convenient, this is done by unscrewing the cap that contains the spring loaded.

Overall Impression

As mentioned at the beginning of the post, this is one piece of kit that I have been waiting for quite some time and it seems that Coil Master have managed to come up with something really special here and exceeded my expectations. Now, is it useful? It sure is! Especially since the majority of e-juice manufacturers use glass bottles and dropper caps which are prone to break if they are accidentally dropped and dropper caps can be sometimes difficult to use especially if the fill holes of you atomizer are too small.

CoilMaster SEB

Regarding pricing, the Coil Master SEB now costs 29.99$ and you can purchase it directly from I think it is worth the money, just imagine that if you were to accidentally drop a bottle of your favorite e-juice you would probably be paying more for that. With the SEB you don’t have to worry about this anymore.


CoilMaster SEB


Coil Master 521 Tab Review


Coil Master has managed to establish itself as an important company in the vaping industry with top of the line accessories. Coil Master’s impact in the vaping world is quite important as they have offered us a better and quicker way to build. This is mainly due to the release of some interesting products, out of which I would like to mention the Coil Master DIY Kit V2, that I have reviewed a while ago. In  today’s review I will also be featuring other accessories from Coil Master however the focus will be on this little tool – The Coil Master 521 Tab.

What is a Coil Master 521 Tab?

The Coil Master 521 Tab is essentially a multi-function tool  that enables you to rebuild coils for your atomizers in a safe and quick way. The fact that it is so versatile it will certainly make it even more appealing to take it away with you, this tool ca replace all of the below in a small and compact package:

  • An ohm reader
  • A voltage meter for mechanical mods/regulated mods
  • A coil rebuilder/testing deck
  • A table Mod

Box contents

Coil Master 521 TabPackaging for this device looks top notch, the device arrived in an eye appealing red and black presentation box with the Coil Master logo embossed on the top of the box and 521 lettering on the sides. All the accessories are nicely tucked in and easily reachable.


The box that I have received contained the following:

  • 1 x Coil Master 521 Tab
  • 1 x Snap-on adaptor for voltage readings
  • 1 x micro USB charging cable
  • 2 x alligator test leads
  • 1 x user manual
  • 1 x promotional giveaway leaflet

Coil Master 521 Tab

Look and feel

The first thing that caught my attention was it’s design, it’s a beautiful device with a small form factor. The size of the device is spot on for it’s purpose, it’s not too small to make it difficult to build on or too big to leave it at home. The device is 84.5mm long X 69.5mm wide x 49.5mm in depth. Size wise it is comparable to an ohm meter but slightly bigger. The overall material used is hard plastic (ABS) for the device and the shape is ‘box style’.

On the top of you device you will have your building deck with the integrated 510 connection, which looks recessed into the aluminium top cap, the 510 brass pin is spring loaded and it has made a connection with all the atomizers I have tested. The device also features an LED display on top of the 521 tab, the display is nice an bright and shows the necessary information (ohms/voltage). The previous version of the 521 tab featured an OLED display that also showed a battery meter and had a couple of graphics when you were in firing mode, the version I have on review is the newer model that doesn’t have the OLED display.

Coil Master 521 TabI favor the old OLED display but there is merit in keeping things simple (for instance it saves battery life). Next to the display you will find a big firing button that sits nice and firm and has a pleasant sound to it. On the left part of the display you also have a blue LED to let you know that you are in firing mode. On the right side of the device you have your mode selector (burn/off/reader) and down below you have your micro USB port for charging. Coil Master 521 Tab

The left side of the device has Coil Master 521 embossed that adds to the design and details put into the device. On the bottom side you have the battery compartment that is fixed into place with two tabs to prevent the cover from sliding off and magnets to prevent it from falling and to allow you to easily replace your 18650 battery without tools. The battery cover also has 4 rubber pads to prevent the 521 tab from moving on your table or any surface when you are doing your builds.

Continue reading “Coil Master 521 Tab Review”

Blog at

Up ↑