Ring reminiscent of anniversary

It is said that it will get hot up to about 50 degrees when it comes 24 hours before the birthday or wedding anniversary. After that it gets hot every hour, it lasts all day long so I can remember it definitely. It is quite a scary item.

Details are as below.Remember Ring 09/15/2006 Never Forget an Anniversary! - Alaska Jewelry

Since it moves with the heat of the hand, it seems that it is not necessary to replace the battery and it keeps moving forever. Since it is resistant to impacts and has waterproofness, it is okay to forget to wear a ring. There are several colors of the ring, so even if there are multiple anniversaries that you must remember.