What information should I include in my add to sell my iphone 4 on eBay?

I'm selling a black iPhone 4 16g (Verizon) on eBay that I'm not using anymore. I took pictures that focus on the imperfections of the phone because it is used and not perfect but it's still in good condition, I definitely want to make sure I leave no stone unturned and make sure I give the buyer all the information they would need to know before buying the phone to avoid any conflict, so please comment with suggestions!

You need to make sure that the ESN on the device is clear with Verizon before selling it, then mention this in the ad ("add" is a math function).