The SMOK T-Air Subtank is compatible with the SMOK TA Coil, which is made of the FeCrAl alloy. TA single 0.2Ω coil: 50 – 70W/Best: 65W. TA Dual 0.15Ω coil: 40 – 60W/Best: 55W. We have an effective and monitored age verification process provided by VerifyMyAge.