The lenses come with rubber covers, a strong magnetic backing with tether, and a sticky-backed magnetic ring you attach to and leave on your phone lens.
So far I've been happier with the fish-eye lens than the macro. You saw some examples of fish-eye shots in previous posts (here and here). It's good for group shots, too, because you can fit a lot of people in!
Here's a regular shot of grape hyacinth. Kinda fuzzy but it'll do:
And here's the same shot with the fish-eye lens.
The fish-eye lens is almost too wide to fit on my dinosaur LG phone, whose stubby antena gets in the way a little. But it works.
Again, here's the normal shot:
And here's the wide-angle:
And this shows how close you have to hold the camera to the subject for a macro shot:
And here's the shot you get:
OK, yeah, that looks cool, but how often are you going to shoot something so tiny with your cellphone? Something that needs to hold quite still, too, as you mash your phone right up to it.
I was really hoping it would be more like the macro setting on my point-and-shoot, which allows a focus within several inches, something my phone camera always fails at (but which I prefer to use sometimes, since I can post pictures online immediately with it).
I'm planning to upgrade to a smartphone one of these days, and the Droid, at least, has a decent macro setting, so I need to find out if I can send back the lens I don't like. But I recommend the fish-eye lens. It's fun! And something you can't get with any regular phone setting.