What Shel said + for me the best part is it hits harder than most 3.7's due (I assume) to the brass plates conducting electricity so well.
When the Touchwood 18650 was on it's way to me, I ordered two 4.8v NiMh batteries, and charger. I figured that I really wanted/needed 5v vaping.
I've been using the 4.8v batteries with the TW, and boge 3.0's and it works great. However, battery life sucked. I mean, I get about an hour, hour and a half. Followed by SIX to SEVEN hours to recharge?!?
Just put my AW IMR 18650 batteries in my Touchwood last night, and 2.0 boges.
Wow!
I'm REALLY amazed at the vap production! I'm going to see what the battery life is with the AW 18650's, and use only the TW 18650 for today.
Not to belabor the point... but the look, the FEEL of this Touchwood in your hand is really nice! It just feels right... much nicer to look at and hold then any tube mod that I've seen!
I'm actually debating with myself wether or not to sell my ProVari. Only thing I use it for recently is checking the ohms on cartos, and battery life on my 18650 batteries! I could probably buy some cheap meter for that.
Not knocking the ProVari... I've used it and loved using it for over a year, but the Touchwood just really shines!