both support in series and in parallel kungfu v4 dual 26650 box mod

both support in series and in parallel kungfu v4 dual 26650 box mod 
  New KUNGFU V4 new smoking technology,Dual 26650 or 18650 baterries Switch Box Mod,Put in Series or in Parallel,Greatness By Design.Unique and Original .

Features for Smy Kungfu V4 mech mod

1) Variable wattage, mini box mod design.

2) Adjustable electrode/top pin.

3) Use newest Aluminium Alloy material.

4) The cover can choose magnets or screw structure, Optional lock mode.

5) Dual 26650/18650 with mosfet switch.

6) Fit in all resistance.

7) Switch to series or parallel modes—real switch 26650 box mod