First in your iphone or ipod go to Settings
Then go to General
Next go to About
After that in about read your Model
If your model says MC your iphone/ipod touch is a MC model
If it says MB it is a MB model
If it says MA it is a MA model.[Your iPhone or iPod touch is Probably not going to be a MA model]
*I myself have a MB model on my iPod touch 2G