Vape Kayfun Master RM110 Airflow control, air hole, and fill hole on side and clear window option. Come with a clear window and stainless window that allows you to configure your tank to either have the clear middle section or full stainless steel setup.

Actually, it's the Kayfun Lite you want to try, not the Mini. The Mini (or 2.1) is a smaller version of the 3.1, but with the same features. The Lite is the 3.1 with both the side fill hole and adjustable air screw removed. Filling on the Lite is through a screw port in the bottom – much easier.

I have both, and both are great. Optimally, I'd love a Lite with the adjustable airflow of the 3.1 and the option of a polished finished. You control the tightness of the draw on the Lite by adjusting the height of the coil over the hole through which air comes into the Kayfun – which means if you get it wrong, you have to empty the tank, open and adjust the coil higher or lower. With any advanced RBA, practice makes perfect. My first attempts on the 3.1 were horrible – flooding, or dry hits,

The Kayfun 3.1 is very popular with German enthusiasts. Airflow control, air hole, and fill hole on side Clear window option Screw on and universal drip tip options Juice collector base I don't bother with silica wick tastes bad to me. It only takes 2 minutes for me to build a micro coils 1.4 ohm cotton build . Works right every time .

Filling the kayfun from the top is easy. This is one of the easy tanks to use , it is no temperamental pita like a geni .i read this and laughed. Why make it hard I recommend this tank to anybody thAt don't mind spending the money if you can get 1. I use this tank everyday.