The Fingertip Pulse Oximeter is a lightweight, portable device used for measuring both heart rate and blood saturation (SPO2). Simply place your finger inside the sensor and have these measurements instantly displayed on a large LED screen. Features a battery-saving automatic power off function, is also latex free. We stand by our products with excellent customer service . NOTE: this product is intended for sports and/or aviation use only and is not a medical device. The Fingertip Pulse Oximeter is a lightweight, portable device used for measuring both heart rate and blood saturation (SPO2). Simply place your finger inside the sensor and have these measurements instantly displayed on a large LED screen. Features a battery-saving automatic power off function, is also latex free. We stand by our products with excellent customer service . NOTE: this product is intended for sports and/or aviation use only and is not a medical device.