UD Balrog-EX TC Mod is a 75w temperature controlled mod and an upgrade to the popular UD Balrog 70w Mod. Not only does this kit look good, it comes with 5 groups of memory parameters and fits comfortably in your hand with its ergonomic design. The Balrog-EX 75 is compatible with either a single 18650 or 26650 battery, facilitated by the included battery adapter tube which also negates battery rattle.