iPod 4th gen w/ upgraded storage & battery

Selling an iPod 4th Generation with a monotone screen. The unit works perfectly with the default iPod software. I have upgraded the battery as well as installed a flash mod. The unit now contains 128 GB of flash memory instead of a 20GB hard drive. The battery was also replaced. As well as this, I have downloaded RockBox onto the iPod. The unit features scratches on the chrome backing. This is common among older iPods that have the shiny backplate, as they tend to scratch much more easily. It's recommended to plug this into a powered USB hub if you want to load songs onto it as these older iPods are very power hungry and might trigger a power surge warning if plugged into the PC directly (at least, that's what I did).