Return policy Beats by Dre

Hello, I would like to buy from the apple store the new Powerbeats3 Wireless by Dre for my boyfriend's birthday which is 20 days from now. I would like to know if I bought them now after how many days could I return them and if the day in which I receive them is the first day counted or if the first day is the day in which I bought them. I am not 100% sure that he will accept the present because he thinks it's too expensive but I know he really wants them.