The 2nd generation iPod touch was released on September 9, 2008.
The second iPod touch was an improved model compared to its predecessor. Its Wi-Fi antenna on the back top left was oval shaped, the rim color was changed from gray to silver, volume controls were added to the left side, and speakers were integrated into the device. The battery lifespan was also improved. Instead of only being able to be updated to iPhone OS 3.1.3., it could be updated to iOS 4.2.1. It was later succeeded by the 3rd generation iPod touch.
- Differences Between iPod touch 1st Gen and 2nd Gen, Everyi.com. 2013-08-19.
- iPod touch (2nd generation) - Technical Specifications at Apple
- iPod touch 2nd generation at the Ipods Wiki.
- iPod touch (2nd Gen) at Wikipedia