IPod touch (2nd generation)

The 2nd-generation iPod touch was announced by Apple at its "Let's Rock" event on September 9, 2008. It became available to the public on the same day.

New features
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. A teardown conducted after its release confirmed the existence of a Bluetooth chip, however Bluetooth functionality was not enabled until after the iPhone OS 3.0 update. 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.