Hello, the 1.8 ohm BVC for Nautilus has two different markings. The 5-packs I purchase online from several different authorized sellers are marked "4.2-5.0V". The coils with this marking work wonderfully and taste amazing (when they work, which is another story for another post). However, the other day I went to a local B&M to buy two single 1.8 ohm BVC for Nautilus and these were marked "3.3-6V". These two coils were TERRIBLE. They tasted just awful and made lots of noise. I didn't use either one of them longer than 20 minutes each because they were that bad. I texted the owner and told him I think I bought fake coils because the markings are different, and he texted back a picture holding up the pack of coils I bought the 2 from along with a picture of the Aspire site saying "the product you bought is genuine". Now I want to know, which one is real? I know you wouldn't put out coils with different marks.