Accurate and fast readings: consistent results that have been tested and proven. The large digital display can quickly receive blood SpO2, pulse rate and pulse intensity results. Graphic and digital display: a simple bar graph to show your SpO2, pulse rate and pulse intensity results. Suitable for all ages: The exquisite design allows fingers of various sizes to be put into the cavity of the finger. Portable and easy to use: light weight, compact structure, easy to carry and carry, can be used at home or outdoors. Health care: This oximeter can check the health of you and your family at all times, which is convenient and easy to use. Specifications: Material: metal, plastic Blood oxygen saturation: 70% - 99% ( 2%) Pulse rate display: 30-240bpm ( 1bpm) Display mode: LED/TFT display Working current: 50mA Power supply: 2 * AAA batteries (Not included) Package Included: 1x oximeter 1x manual Note: 1.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the pictures. 2.Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement.