hello

[free_at_last]

I allways wanted to ask this.I ve seen a lot of videos of  people saying that the obe ex. that they had lasted like 1 hour,2,3 and i ve heard people that say that some of they r obe ex. lasted up to 4 hours,is this true of course i m at the begining and mine a few that i ve experienced lasted a lot less can u have this control and make those obe  ex. last of coure a few or rarely  up to 4 hours?