Features Measurement: Adult, Pediatric, Infant, Neonate, Animal Apply with 9-pin D type connector SPo2 sensor, more compatible Alarm setup easier with button on the panel Three Standard AA size alkaline batteries or rechargable batteries Automatically Power-off Audible and Visible Alarm, 2-level volume adjustable Technical Specifications Oxygen Saturation (SpO2) Range: 35-99% Accuracy: ?1% (90-100%) ?2% (70-89%) Pulse rate Range: 0-250 bpm Accuracy: ? bpm Display Numeric display: Two bit 7-segment LEDs Pulse intensity/Battery coulometry: LED segment Indicator: LED, two colors Temperature Operating: 0~45oC Transport / storage: -20~+60 oC Power Option Three AA size standard or rechargeable batteries Dimension 120?3?2 mm Standard accessories one SpO2 adult finger probe