1,Accurate Measurement: Accurately measure your blood oxygen saturation, pulse rate, perfusion index and pulse strength within 8 seconds. 2,Reminder: When the 02 level or the PR value exceeds the preset limit, a beep will be issued to remind you, and the value will flash on the screen. 3,Bluetooth Transmission: It is very convenient to transfer historical data to the application quickly and accurately via Bluetooth, no need to record manually. 4,Screen Display: Oximeter can quickly get the measurement results and display them on the screen, which is very convenient to use. 5,Portable: Oximeter is small and light, it can be used only by pinching it on the finger, the operation is simple, and it can be carried when going out. Item Type: Oximeter Material: ABS, PC Model: AD901 Color: White Style: TFT Battery: 2 x AAA Batteries (Not Included) 1 x Oximeter 1 x Strap 1 x Manual