LOVE this unit. It has way more power than I can withstand haha. I love it. So many features and options. Anyone whose reading these before purchase, just know, if you purchase this, you will not be disappointed at all. It’s awesome. One caveat though, you have to be in the 35-40% range on the power output setting before you begin to feel it. I thought mine was broke cus I feel nothing under the 35% output power setting. Not sure what 1%-34% setting is for lol. I feel nothing when in that range. But 35 and above, it very very very quickly becomes to much power lol. I can’t stand anything over 45% right now lol. Always trying to increase a tad each use to get used to the power. Boy, I’m writing this review from my phone at work. I feel a hard coming on just thinking about it lol! I love it. Definitely purchase the optional power cord though. Forget the battery. I’ve used he power cord since day 1. It increases power by 30% and unlimited time use. Battery would likely die 1/2 way through or right before climax lol. ADMIN: Thanks for your review and feedback. Everyone has a different threshold hence why we have the level of control we do and for many users they will feel output lower than you will. It is also dependant on the electrode you are using and the area of the body you are using it on.