This is a Knock Off and not the real thing.
My Brother had one and I got to use it when I went over to the BBQ. I thought it was so cool and I ordered it or at least I thought I did.... I received this cheap imitation that did not work! I don't send a lot of things back. But this was ridiculous. I found out from my brother where he got his:
:Charcoal Companion Amazing Bug Zapper

It's Pretty Cool! But read up!
I got 3 of them I bought from harbor freight for 2.99.Their pretty cool, but alot cooler at $3 a pop.The 1s I got are powered with 2 D batterys though. For the most part it's pretty cool cuz if you get em good they pop and everyone at my work thinks its great.But you cant get em in mid air, you have to trap them on the wall and make them fly into the net.Otherwise you just stun them in mid air and they get right back up a couple seconds later. Also it leaves behind a burnt fly smell,which at least the women at work find it sickening,I think its grose but kinda cool! All in all a good alternative to the fly swatter if you don't like the mess it leaves behind.At least with this it sticks to the metal grate and you can just knock it off in the garbage.NOTE: When you knock it off make sure you don't let your hand or fingers come in contact with the metal grate. I figured out the hard way that it still has power in it even if your not pressing the button.It's a jolt you wont soon forget.Enjoy!

racket zapper
this really works great on all sizes of flying and crawing bugs from the smallest nat to big flys and whasps i've told others about this product,it runs on 2 small batteries and i've yet to put new batteries in it and i've had it for 2 months

ZAP 'EM DEAD
Best invention since sliced bread. Kills any flying insect and gives you a huge surface zapping area to ensure success. Fun for kids (they love the "sizzle") and adults. Indispensible for backyard and camping. Be sure to get extra because everyone wants a chance to try it. Makes fantastic gifts as well!

Practice Your Backhand on pesky pests!!
These little deals really work, and well at that! Really large bugs like say a Palmetto bug-(aka Giant-Roaches;) you may have to hold them down with the zapper for a moment to make sure their good and fried ;-)
But small-average size bugs ie: flies,spiders,mosquitoes etc.. are pretty much toast on contact:)