I bought one of the "rounded rectangle" charger mounts from an eBay seller in California to avoid the delay of shipping from China, though a bit of a shipping issue pretty much cancelled that out.
https://www.ebay.com/itm/402570561910 is the exact auction, for reference.
The box is printed with the images that you see all over the product pages. It shows it in silver/white and black/black, just as the product pages do. The other images that you see on every product page are on the other sides of the box as well.
Once you open it, you can see that it's actually black/gray, as others have found. It also includes a USB-A to USB-C cable, telescoping suction mount, and vent clip mount. I've never used a vent clip, but this one seems decent. It has a hook on the back of the clip, and a pretty strong spring, so I would expect it to hold fairly well. It has rubber/silicone on the back side to provide some friction/protection against the dash surface too. I'm currently using the suction mount on my work desk. I'd probably sum it up as "works as described" but I'll admit that the cantilever-ish design works much better than the suction mount included with my
iBolt ChargeDock. The pieces connect via a standard 17mm "Garmin" ball mount, so there are infinite ways you could mount this in your car.
As for the actual charger/mount... The magnets hold my 12 Pro in the Apple leather case quite well. It does have the orientation magnets below the ring also, though it's still fairly easy to rotate the phone. I popped it open and it uses fairly thick magnets (probably at least 5mm thick), not super-thin ones like the stickers used to MagSafe-ify existing cases. It gives a satisfying thunk when my phone snaps onto it. I held the charger by the ball mount and shook it around and my iPhone wouldn't fall off. If I swung my arm down into the palm of my other hand, the shock of the impact would cause the iPhone to come off. I wouldn't trust this as the only method of securing the phone on my motorcycle, but I'd expect it to stay put even over some pretty rough roads in my car.
I tested the charging with a RAVPower 45W USB-C PD charger, a couple different USB-A QC 3.0 chargers, and an old-fashioned 5V 2.4A USB power block. I bought one of those cross-shaped USB ammeters a couple years ago, rated up to 15V and 30W per the description. With that tester, I never saw it go above 9V or ~10W. Wireless chargers are usually around 75% efficient, which matches up with this only charging at the old 7.5W, not the new MagSafe 15W.
I noticed that the tester didn't specifically say it supported PD, so I bought a newer version. The hardware is printed with the same J7-c model number and specs, but it does have different programming. The description said it supports PD and handles up to 30V and 150W (which is actually what's printed on both of them). With this tester, the PD and QC chargers ran at 9V, but bounced between .15A and ~.33A (~1W - 3W). Even switching back to the old tester, I had trouble finding the right combination of charger and cable to give me the 10W power draw I originally saw. With the plain old USB block, I got 5W charging, as expected.
This charger does show the "ring" charging animation. It seems to show at any charger voltage above the standard 5V, regardless of the actual wattage. It showed even with the bouncing 1-3W output, but not with the 5V/5W charging. None of my old Qi chargers, even the one that I added a magnet ring to, show the animation, so I'm not entirely sure what triggers the display. I don't yet have an official Apple MagSafe charger for comparison.
In posting these pics here, I noticed that the mount's spec sheet only lists 12V input/output as hitting 15W output. All of the chargers I tested are rated for 12V and high enough amperage, but it doesn't seem to actually work at 15W (at least not through my USB meters).
Summary: This is a decent magnetic mount with wireless charging built in. I wouldn't expect it to actually do 15W charging, and you may even have trouble getting 7.5W out of it.
