eXpromizer V3 Fire is a long story MTL RTA, Germany team spent more than one year to bring it in the market. After eXpromizer V1.1, V1.2, V1.3, V2, V2.1, then it is V3 Fire now. It is the Germany eXvape third generation design. Top cap is screw version, which is children proof design. Children can not take it off easily with this screw protection. When you need to fill it, only screw this top cap out, then fill the top hole. You can check how liquid you fill from the glass window, which is protected by the metal tubes. This RTA tank you can also control the liquid flow under different VG/PG situation. As well, when do not use it, you can close the liquid hole and air hole completely, than it can seal the tank very well without leakage problem. Air flow design, this time not ball version, it is much easier O-Ring settled air ring. One side is 6 holes, the other side is 5 holes, so you can select only one small φ1mm hole for the real MTL vape. eXpromizer V3 FIRE is a Really Flavor Chaser MTL RTA Tank. Great Flavor and much enjoyment with the very competitive price with Germany Brand. Vape ON!