Port - Most input/output devices are outside the computer case. These devices communicate with components inside the computer case through a wireless connection or through pcables attatched to the case at a connection called a port. (Chad G.
Its called the Ring Clock, and is meant to be a time telling device worn on one of your fingers. It allegedly uses ultra-thin mono-color LEDs and a ultrathin rechargeable lithium polymer battery (Wearable Technology)