The "510" refers to the Joye510 - the number simply refers to the model number of the design.
As a total sidenote - for those of you thinking about going back to 'analog' cigarettes.... I just woke up once again feeling like someone is sitting on my chest. Nose is stuffed up, throat is sore from snoring... again. I just woke up and I already feel tired.
I actually wrote that more for myself than anyone else - I need to make sure I remember the bad so I can eventually get myself off them.
As a total sidenote - for those of you thinking about going back to 'analog' cigarettes.... I just woke up once again feeling like someone is sitting on my chest. Nose is stuffed up, throat is sore from snoring... again. I just woke up and I already feel tired.
I actually wrote that more for myself than anyone else - I need to make sure I remember the bad so I can eventually get myself off them.