The Geekvape B series coil is for use with the Geekvape, Boost series, B60 and Obelisk 65 Kit.
0.4Ohm Rated: 25-33w
0.6Ohm Rated: 12-25w (MTL)
We recommend a higher VG e-liquid for the 0.4Ohm, and 50/50 for the 0.6Ohm