big doubt on the product, is it really new?

I bought this product to the seller "letit" no invoice, I request a mail, short answer and without any salutation: depending on your point demand !!!
IPod's hard to be recognized by the computer and hard work, that's why I asked for an invoice in case of problems and it leaves me a big doubt, this is it really new or refurbished ?
without invoice within 3 4 days I refer the unit and request reimbursement