I’ve been using this battery throughout the day for several weeks now. I have an iPhone 12 Mini and this battery pack extends beyond the length of the phone a bit, but because there is no kickstand and it has to lay flat anyway, this doesn’t affect functionality. The wireless charging is 7.5 w (the Apple standard) and makes the MagSafe feature nice, as you can just stick it on and forget about it without worrying it might come unaligned and stop charging in your bag or pocket. It has a nice, strong magnetic attachment.
I also like the dual charging feature so I can charge my phone and top off my iPad mini simultaneously, just to ease any low-battery anxiety (albeit more slowly than if I did them individually).
I wouldn’t call it sleek - maybe big boned at best. But I guess I could say that about myself as well!
Overall, this works as it should and holds more than 1 full charge for my phone with some juice left over for other devices! This is another high quality product from Baseus that I would recommend.