Not that we haven't been inundated with circuit-related fashion accessories in the past, but if you've already started thinking about what to get that lovely lad (or lady) in your life come February, look no further. SenseBridge, a research group with loads of passion, has just revealed the Heart Spark ($69, on sale now) -- a wearable pendant with an integrated wireless receiver, a smattering of LEDs and a wow factor that's downright heartwarming. The fortunate wearer must also strap a belt around their chest in order to monitor their heart rate, which is then transmitted wirelessly to the Heart Spark; upon receiving the information, the onboard lights will flash at the same rate as your heart, making it easy for the love of your life to see when your heart is aflutter. Video demonstration is just past the break, and yes, it's about as precious as you'd imagine.