Features: 1.Quick chek : built in acceleration sensor,using high performance acceleration sensor, the measurement time is shortened, only need 8 seconds. 2. Lightweight and portable: the product is small in size, light in weight and easy to carry. 3.Automatic shutdown function: In the state of the measurement interface, the measured finger is automatically turned off within 20s after being disconnected. Description: 1. Finger Pulse Oximeter is an economical and accurate way to detect pulse rate and oxygen saturation through your fingers. It is suitable for testing blood oxygen saturation and pulse rate in hospitals, homes, schools and medical centers. Specifications: Material: ABS Display mode: color OLED screen display Color: random Size: 56*34*32mm Application: Finger Storage Bag Specifications: Product material: EVA Product size: 9.5 * 6 * 4cm Color: black Package included: 1 x Finger Pulse Oximeter / or Bag（Optional） Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.