ESTA is valid for 2 years. This procedure is mandatory for all citizen of countries wich do not have a visa requirement.
It is issued for all visits lasting a minimum of 3 months.
The following information may also be required:
Once we have validated your payment and processed your approbation, you will receive your Electronic Travel Authorization (ESTA) through your E-mail. The processing and approval time is usually very short (a few hours to 48 hours)
Your stay in USA will be valid for 3 months, for more than 3 months a new ESTA will be necessary.
CITIZEN ELIGIBLE OF THE (ESTA):