1. Our pulse oximeter is mono-color lcd display, one display mode 2. Spo2, pr 3. Three color select for our fingertip pulse oximeter 4. Low power consumption, continuously work for 50 hours with two aaa batteries 5. Low perfusion&le 0.4% four medical oximeter 6. Our fingertip pulse oximeter can be used at home or in the hospital. Package size:8.3*6.0*3.8cm, weight:52g..