All Smok TFV4 Tank coils have long lifespans, ranging from two weeks to a month. All options also feature organic cotton as wick and 304 stainless steel components.
TF-T3 is a triple coil head with a resistance of 0.2. This coil head is rated from 40-130 watts of power. Expect to go through considerable e-juice with this coil. At anything under 40 watts, there will be minimal vapour, if any at all. This coil head will reward you at 75 watts or more with plenty of vapour and plenty of flavour It will also rapidly drain your battery, so make sure to always keep a spare on hand.
TF-Q4 is a quadruple coil head with a resistance of 0.15. Strands of wire are wrapped parallel to each other, to create several coils wrapped together. Rated from 40-140 watts, the coil requires serious power and will drain your battery. At 81-90 watts, the experience is gratifying. The head produces considerable vapor, with minimal loss of flavor. Expect to go through bottles of juice pretty fast.
The TF-N2 Standard Core (Ni200) dual coil is another nickel-based option. The head varies in resistance slightly at 0.12 - 0.02. This is partly due to having such a low resistance coil and because they are wrapped by hand at Smok's factory. The allowable temperature range is 420-600 degrees Fahrenheit.
TF-R2 Dual RBA
The TF-R2 is the dual coil RBA assembly. It has coils already installed in the deck, so all you need to do is add wick, and you can start vaping. This kit comes with a pad of organic cotton, a few pre-built coils, spare screws, and a spare o-ring.