Buying a new e-cigarette Mod?

A Mod is an evolved e-cigarette of the standard size e-cigarettes. Over the years, these products have become increasingly sophisticated and multifunctional. Nowadays there are Mods in various shapes and sizes and offer you a wide choice in power, adjustability and options.
‘Mod’ is short for the English word "modification" and stems from the early days of electronic smoking, when "mods" were still simple, "modified" battery holders.