Test your love! Just put your thumbs on each of the metal contacts, and the LED "love meter" will display your "love ranking." Apparently, 20 percent is a broken heart, while 100 percent gets full super-love-love heart marks! Perfect for putting your girlfriend/boyfriend/wife/husband/anybody on the spot! Of course, HLJ cannot vouch for the scientific veracity of this device...nor can we be held liable for any repercussions from less-than-satisfactory readings! We only ask that you test at your own risk. And, of course, have fun! This is the super-cool "special black version."