This new product is crap. Utilizing the recommended settings from Aspire, I get maybe 3 days of less than 500 puffs a day, no where near the suggested replacement of two weeks with 500 puffs a day. Ever since Aspire has changed to the new coils, I can not get a coil to last more than 3 days. Usually, I have to change every 2 days. So, from paying $16 every month and a half, I now have to spend $45 every month and a half on these. I'm telling all my friends to stop using the Nautilus because of this issue, especially after I got as many to buy them because of the quality they used to have.