Question about Epson EcoTank ET-2826

As I have a new printer, I don't know everything yet. I think not as I can't find a duplex function. Note: At the moment I print on both sides by printing the odd pages first. Example 1,3,5,7,9, then I place the pages upside down (note the order), printed side "down" and print 2,4,6,8,10.