24-hours before your anniversary this ring heats up to 120 ºF (49 ºC) for ten seconds. It then heats up for ten seconds every hour, on the hour until your special moment, ensuring you never forget. According the jeweler, the temperature increases as your anniversary gets closer but the ring will never burn your finger (despite what the title of this article says) — it gets hot enough to be uncomfortable but never burn.
The best part? It apparently is “maintenance free”:
It’s maintenance free! Using a micro thermopile, The Remember Ring™ converts the heat from your hand into electricity, keeping the battery charged and microchip clock running perpetually. Just specify your anniversary date when you order, and we’ll program your ring for you. Set it and forget it-until your anniversary!
The worst part? It costs $760.
[via Alaska Jewelry ]