Model: CL-81 OA Specification: 1. Three Parameters: SPO2, Pulse Rate, NIBP,ETCO2 is optional 2. Color LED display, four directions adjustable. 3. Sp02 and pulse monitoring, and Waveform display. 4. Low-power consumption, continuously work for 50 hours. 5. Small in size, light in weight, and convenient to carry. 6. Low voltage alarm display, Auto power-off. 7. Runs on standard AAA batteries.