I am totally blown away with this device and so happy to have had the opportunity to purchase it. Living on an extremely tight budget i could not justify the purchase but finding it here was like hitting the jackpot! I got to use it last night and because i am not new to this kind of technology i knew what it should feel like while using it.let me tell you this is the real deal! Zapped me good even at a 1 level. (it's been awhile since i've used ems ). I would give this little beauty a 10 if they'd let me. Highly recommend this store, and this device!