A:AnswerIf it is a 7th generation Ipod Nano it should have Bluetooth 4.0 installed. if you really want it for other ones you could look to getting a Bluetooth adapter.
A:AnswerIt should work with both together but if you only use one it has to be the left one. They work in a primary/secondary way. The left is primary and controls the left.
A:AnswerPlease feel free to visit info.skullcandy.com for troubleshooting information for connectivity. If that doesn't remedy your issue, please reach out to us at contact.skullcandy.com and we can assist you in getting a new pair that functions properly.