It consists of a private telephone session, no matter where you are. To do this, you must correctly indicate the number where you want to receive your call and an alternative number. The duration is 40 minutes and is carried out in a timely manner with a tolerance of three call attempts to achieve communication and for a consecutive period of 10 minutes. Keep this in mind, because it does not contemplate "rescheduling"  The subject of your interest is absolutely free, private and you will have the possibility to send a specific message at the time of your purchase.