Caretec's Colorino color identifier uses advanced technology to distinguish 150 nuances of color. This small (4.93 inches x 1.56 x 1.81) device also can distinguish sources and intensities of light, both natural and artificial light. It speaks clearly at 3 volumes and has an earphone jack. Uses 2 AAA batteries (not included), and is designed to accommodate a cord. (Cord is not included). Product includes a protective pouch.