Specification of Smok TFV4 :
Dimensions: 24.5mm x 70mm (D x H)
510 threaded
Capacity: 5ml
Replaceable glass tube
100% pure organic cotton
Large rectangle intake holes
Double layered drip tip
Sub ohm quadruple coil 0.15Ω (TF-Q4)
Sub ohm triple coil 0.2Ω (TF-T3)
Rebuildable dual coil 0.25Ω (TF-R2)
Rebuildable single coil 0.85Ω (TF-R1)
Leak proof top refill design

Main Features:
TFV4 mini tank with 22 mm in diameter matches a wide range of mods.
All coils have been used organic cotton as wicking material、 which can produce a purer taste.
More advanced TF-CLP2、 Clapton Dual Coil Head has more surface area in contact with the wick to give off more vapor.
New patented TF-N2 Coil & TF-Ti Coil are using Nickel 200 and Titanium temperature sensing wire respectively、 
and perfectly for work with the SMOK X CUBE II temperature-control mod.
The drip tip with double-layered structure has been improved on the inner layer of glass to avoid scalding.
Airflow can be adjusted freely by either turning the ring on the drip tip or the one at the base of atomizer.
Leak proof liquid slot can significantly solve leaking problem.