The filter clip comes compactly in a cardboard box with a fixable rubber strap, a circular polarizing filter, a storage pouch and a sealed cleaning cloth. I was immediately impressed by the idea, finally a polarizing filter on the mobile phone! Image editing is fine and good, but it doesn't replace a polarizing filter. For us, this is more or less the always-on filter on the SLR, even though there are, of course, situations where you don't need it. But it usually doesn't hurt even if it's still on. The filter clip is not compatible with any of my mobile phone cases. So I can't sign “Support Magsafe phone cases” for mine. Now I've been thinking about how I would like to use the whole thing for a relatively long time. While I have no problem using Magsafe for (usually lightweight) accessories on my mobile phone, I really didn't want to hang the not-so-lightweight cell phone on the accessories - and you don't have to do anything else here. A pouch is included in which the clip itself has more than enough space. Unfortunately, the mobile phone does not fit in the case. Just putting the clip in the bag when you're on the go and packing your mobile phone somewhere in your jacket or trouser pocket without a case or security strap is not a useful solution for me. And then put everything back together every time you need it... In the end, I sacrificed one of my cases and cut off the camera protection frame. This allows me to use the filter clip with the case and attach the included strap to the cover instead of to the clip. The filter clip has a bit more game than directly on the mobile phone, but it lasts great. That worked great so far. Since the strap is made of rubber and therefore somewhat flexible, the whole thing slipped off my wrist and landed on the ground at the end of the day when I took off my gloves in front of the parking machine. The clip fell off, but the phone (thanks to the case?) Nothing else happened and the clip and filter were also not damaged. Another case with camera control button and slightly higher screen protector has been ordered for version 2.0 after the proof of concept has worked.