Get noticed with this unique iNecklace. It breaths just like computer power LEDs. iNecklace will glow for up to 72 hours per set of batteries. The kit comes with 2 sets of batteries. iNecklace is programmable/hackable! Sophisticated. Elegant. The iNecklace is a gorgeously machined aluminum pendant with a subtle pulsating LED. Made for women who celebrate art, science, engineering and great design. For any lady who loves technology and wants beautiful, geeky jewelry. Welcome to the future!