Dual color OLED display SpO2, PR, pulse bar and waveform 6 display modes Adult and pediatric use Light and compact Easy and convenient to operate and carry Ergonomic design Low power consumption (more than 30 hours of operation on 2 AAA batteries – included) The fingertip pulse oximeter is a very important and common device to check patient blood-oxygen saturation (SpO2) level and pulse rate. As a small, compact, simple, reliable and durable physiological monitoring device, it greatly enhances patient care. It is widely applied in clinic, hospital, social medical organizations, first aid, and so on. SpO2 Measurement range70-99% Resolution1% Measurement accuracy80%-99%; ±2%70%-79 %; ±3%0%-69%;unspecified Pulse Rate Measurement range30-235 bpm Resolution1bpm Measurement accuracy30- 99; ±2 bpm101- 235; ±2% Dimensions2.28in (W) x 1.25in (H) x 1.33in(D) Weight1oz (28g) (without batteries) BatteryType 2 AAA alkaline or rechargeable batteries – included Operation time about 30 hours for normal operation EnvironmentalOperation Temperature 41°F – 104°F (5°C – 40°C)Storage Temperature -4°F – 131°F (-20°C – 55°C)Operation Humidity RH less than or equal to 80%Storage Humidity RH less than or equal to 93%