Phân biệt iPod Touch. Kiểm tra số model. So sánh số model này với những thế hệ khác.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
The iPod Touch resembles an iPhone, and is the only iPod model to have a full-size touch screen. You can most easily find your iPod Touch's model number in small print on the bottom of the iPod Touch's back surface. Your iPod Touch's model number will determine its generation:   A1574 — 6th Generation (2015 and up)  A1509 or A1421 — 5th Generation (2012 - 2014)  A1367 — 4th Generation (2010 - 2012)  A1318 — 3rd Generation (2009)  A1288 or A1319 (China only) — 2nd Generation (2008)  A1213 — 1st G