521 Tab (Superb Device)
Just received the Coil Master 521 Tab and did my first build on it today. This little unit is a great tool for building RDA's and checking resistance. No need to fumble with mods while building and wicking coils. I also really like the fact that you can vape your fresh build right on the device! I also like being able to check the voltage of your device with the supplied adapter. I don't know how I lived without this thing for so long!