Frankly... bizarre and why spring to mind lol!
'It's compatible with the iPhone 3G only, for some reason, but 3G owners should be pretty excited—the case features wide-angle, closeup, and fisheye lenses that screw on to the back, in case you want all your contacts to look like they're in a late '90s rap and/or skateboard video. But it doesn't come cheap, at $200 for the case and $15-55 for each additional lens, and the company even warns that reception may not be so hot, considering all that metal between the receiver and signal.'
http://gizmodo.com/5308739/factron-iphone-case-features-interchangeable-lenses
'It's compatible with the iPhone 3G only, for some reason, but 3G owners should be pretty excited—the case features wide-angle, closeup, and fisheye lenses that screw on to the back, in case you want all your contacts to look like they're in a late '90s rap and/or skateboard video. But it doesn't come cheap, at $200 for the case and $15-55 for each additional lens, and the company even warns that reception may not be so hot, considering all that metal between the receiver and signal.'
http://gizmodo.com/5308739/factron-iphone-case-features-interchangeable-lenses