It all depends on which particular tank and coil setup im using. With that said, i could be vaping anywhere between 60 and 130watts, even up to 150. Example....in my bravo rta, i make my own coils that ring in at .19 to .25 ohms so ill hit these around 60 to 70 watts. If im using my tfv12 cloud king, drop in coils are usually around .14 ohm and i can take these all the way to 150 watts, but usually stay around 130 though with this. The wattatge you use will depend on whichever setup you have and your own personal happy place.