Function: 1,Monitoring pulse, SpO2,PR(Pulse Rate). 2,Displaying volume and column diagram of stroll. 3, 4 directions, 8 display Description: 1,Display Method: Color OLED display, two display directions. 2,The product is small in size, light in weight (total weight is about 50g including batteries) and convenient in carrying. 3,Power consumption of the product is low and the two originally-equipped ...