But if you notice from the GrimmGreen follow-up video, he is almost 100% certain that a future firmware update will increase the VV to 6V or more, as am I, which is why I bought it....the ability for future upgrades to increase the usefulness of the
device. I use low Ohm cartomizers/clearomizers anyway and for those, going higher than 5volts is just asking to burn up your atty.