which Ipod has bluetooth?

Hey Gilboston, I know the iPod 4 and 5 touch models have BlueTooth and Wi-Fi. (I wouldn't buy anything earlier) BUT be careful buying a used iPod!!! iOS 7+ have activation locks (iPod 5, the current model is the only iPod that can run iOS 7 and iOS 8), if the seller does not un-tether, wipe / remove there information unlocking the iPod you will have bought an expensive brick-- and there is NO WAY to bypass the activation lock. Sad to say, many find out after the sale that the iPod was stolen and are unable to get there money back, so know the seller, do your homework. Also, iPod touch 4 can only update to iOS 6.1.6. The current iOS is 8.1. Hope this helps, don't want to hear you got burned! Good luck, Cheers.

Both the iPod Nano and iPOD touch have bluetooth.

The 7G iPod Nano and the 2G iPod touch and later have Bluetooth.

Apple does not respond in these forums, we are all just users like yourself.

To use bluetooth between iOS devices you need an appropriate app.