When it arrived the magnet fell out. It's okay, I took super glue and glued it on. Then it got colder (32f), I dropped the keys and cracked the hull. So I'm not thrilled that I can fix it again, but I won't be buying them again.
Pros
KeySmart MagConnect is designed to work with all types of keys including car keys, house keys and more.
Cons
The quick release feature can accidentally release keys when they are in a pocket.