iPod touch minimum iPod to run iTunes Radio

What is the minimum iPod (generation) required to run iTunes Radio without any glitches? I want to use this device to play office music 8-9 hrs a day.

TIA,
Sam

Jessica Lares said:

The only one that can do it is the 5th generation.

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Bear said:

To expand on Jessica's answer, iTunes Radio requires iOS 7 which is why the 5th gen iPod touch is the only one that can do it.

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Thank you both. Your answer confirms my guess.

Regards,
Sam