Pulse Oximetry is an easy, simple, completely painless measure or test of how well oxygen is being sent to parts of the user's body furthest from his heart, such as the arms and legs. ZOVEC (ZP2-O2) is equipped with latest technology based on the principle of Photoelectric Oxyhemoglobin Inspection Technology which is adopted in accordance with Capacity Pulse Scanning Recording Technolgy and thus observes a rapid measurement of oxygen saturation level in your body without using needles or taking a blood sample