NG Strip® Nasal Tube Fasteners, 1 Box of 50 Clamps 5V AAA battery ( Not Color:Red 5V AAA battery ( Not included ) This instrument is a significant advance in hand held otoscopy providing an improved view for enhanced learning and decision making * A nearly complete view of the tympanic membrane with approximately twice the field of view and 30% greater magnification than a traditional otoscope * Better clarity and definition of landmarks * The ability to adjust focus for variable ear canal length or farsighted eyes * Shipping Carton Size: 12 L x 10 W x 6 H * NG Strip® also minimizes the chance of irritation and tissue necrosis that are common with conventional tapes NG Strip® eliminates the time consuming ritual of securing nasal tubing with strips of irritating tape