Hearing people say wont turn on, try holding the button down for about a count of 20 you will hear the sound of a fan and then its ready to use.

Have no clue how this works.

EDIT 11/4/19: It's been a year since I bought this. After using it about fourteen times, I decided to give it a rest to see what would happen. At first, the hair grew back extremely slowly and sparsely. But after a few months, it's almost as if I never used the thing to begin with. I wouldn't recommend this for a large area. It's way too time-consuming a process to have to repeat every few weeks for the rest of time. If you're just going for a small area, it might still be worth it to you--just know that it really isn't permanent and you're going to have to do regular touch-ups going forward.I've had this since 11/5/18 (it's now 1/28/19) and I've used it eight or nine times. The instructions say to use it once a week, but the process is sufficiently time-consuming that I can't always get around to it. I got it specifically to remove coarse hair from a few small areas where my hair causes tons of itching whether it's grown out or freshly-shaven--basically, I'm using this thing for sanity rather than for vanity. Here's what I've learned.The hair remover really does only remove dark hair, and it does this by targeting pigmentation. I have light skin and if I zap where there is no dark hair, I don't feel much of anything. I have light body hair and that hair is unaffected by the remover. The dark hair is affected. If I zap where there is freshly shaven dark hair, I feeeeel the burrrrrrn on all the hair follicles. If I accidentally zap a hair that hasn't been freshly shaven (SHAVE DIRECTLY BEFOREHAND--NO STUBBLE LEFT BEHIND), the hair shrivels right up like I stuck it in a candle or something. And that can hurt extra. With repeated uses, the hair grows back less and less, so this device becomes less and less uncomfortable to use in a given area. Towards the beginning, as I was murdering tons of hairs at once, I did put aloe vera on my skin to cool it down AFTER I was done with a given zappy session. Not during, not before, because according to the instructions gel can mess up the device and make it not work as well.This thing doesn't really work unless I have it on the highest setting, so I need to basically suck it up and deal with the pain. It also doesn't work as well unless I go over the same spot multiple times, so it's important to budget time for this process. I basically just go over and over the area until my skin is too angry at me to continue, or until I'm fairly certain I've achieved all I can with a given session. There's a multi-second cooldown between each zap--if you try to zap before the cooldown period is complete, you'll just change the intensity setting on the device. Patience is good. If you're doing a larger area like your legs (my leg hair is too light to be affected by this, and like I said, for me this is about sanity, not vanity), this will be an extremely slow process. So know that going in.The device comes with sunglasses. Wear them. Also, I make sure to close my eyes and turn my face away when I'm pressing the button. Don't have anyone else in the room with you (including pets) who isn't similarly protected. Retinal damage ain't no joke.One thing I was curious about was what would actually happen to the hair when I used this. It doesn't just go away. I've still had to deal with stubble, ingrown hairs, etc, after a shave-and-zap session. But what I have noticed is the hair grows back more slowly. With each zappy session, the hair also grows back more sparsely. Like I said before, my lighter hair is unaffected, continues growing as normal, but the darker, coarser hair is just happening less. After nine sessions with this thing, my skin is smoother and less irritated than it has been in years. I look at places where there used to be that mean dark hair and it's not growing there anymore, with a few stray exceptions. It's a relief.For me, it's important not to get carried away with this thing. I'm not here to do a full bikini purge. I'm not here to zap away my armpit hair. A standard razor will always be part of my life. But this thing has helped me with an embarrassing, irritating problem, privately and relatively cheaply, and I'm grateful for that. So yeah. It's slow, it's clunky, it's time consuming, it's uncomfortable--but it gets the job done.

I haven't done the full month on any areas yet for hair removal, but I do notice a difference in hair growth on my legs. I've done three treatments so far. The hair is taking longer to come in. Definitely shave before doing it. I started on the lowest setting they said and would increase or decrease as I felt I needed to. The only annoying thing, and this could just be me, because of how it has to lay, you can't do everywhere, and I sometimes struggle finding just the right position to put it in before it let's me flash the light.

Easy to use and very simple. Enjoying it so far