I don't own it and I haven't read any reviews, but it is a 220W capable two 18650 mod.
Trying to use 220 watts from two cells is not advisable, once they are discharged you will be pulling 38 amps each from them. Even if you use a true 30 amp cell like the LG HB2/4/6 you will be exceeding their CDR by nearly 30% at that wattage.
Using the batteries listed above you should stay below 170 watts
Stay below 120 watts and you could use a 20 amp cell like the LG HG2 or the Samsung 30Q
Stay safe, and vape on.