The iCa Military Edition looks for all the world like an ancient Leica rangefinder camera - and is styled as if you're meant to carry it into a historical battle.
But the cheekily-named gadget ('iCa' is rather similar to 'Leica') is in fact a 23-piece polycarbonate iPhone case - and adds effects such as fish-eye lenses over the 'normal' lens in iPhone.
The case also has a shutter button that actually works, connecting to the one on the side of iPhone - and its maker, Japanese company Gizmon, offers a range of lenses including fisheyes, priced at $45 each.
The case has 23 separate components - and even has a magnetic mount which lets you swap lenses (the big central one is a dummy - you swap smaller ones in the corner, where iPhone's camera is).
You 'set up' shots on your iPhone's screen. The case is $65.
Four Corner Store, which sells the contraption in the U.S, says, 'The iCA iPhone case turns your phone into the camera it always dreamed of being.'
A detachable tripod mount allows for longer exposures - and there is also a soft fabric bag, which is a case... for your iPhone case.