Come and see our amazing products. This oximeter can measure and monitor heart rate,as well as pulse bar graphs, to visually indicate any irregularities or abnormalities, such as weak heartbeat.insert finger into the silicone of pulse oximeter, and press the "ON" button. Very suitable for those who need to measure and monitor oxygen saturation, pulse rate, heart rate and heart rhythm such as: climbers, hikers, skiers, cyclists. Remember to keep still when measuring. NOTE: This oximeter is for sports or aviation use only and is NOT intended for medical use.Monitor is very light, small in size, low in power consumption and easy to carry with detachable lanyard; so, you can measure oxygen saturation anywhere. Auto power off seconds after removing finger to save battery life. Pls confirm with us about the packing info, stock color and exact production time before placing your order.