Specs: Patient Range Adult, pediatric, neonatal patients SpO2 Measurement range: 70~100% Accuracy: 1%(86%~100%),2 %(70% ~85%) Resolution: 1% Pulse Rate Measurement range: 30~250 bpm Accuracy: 1bpm Resolution: 1bpm Display Mode High Brightness Color LED Display Area:57(W)X40(H)mm Function Audible and visual alarm Battery low power and silence alarm AUTO power off after 2min no signal input Power Supply Input :DC. 2.8V~5.4V Battery:3.3V Li-ion Rechargeable 8 hours for continuous working Environment Requirements Temperature: Working: 0 ~ 50 degrees Transport and storage: -20 ~ 60 degrees Humidity: Working: 15 ~ 95% (non-condensing) Transport and storage: 10 ~ 95% (non-condensing) Atmospheric pressure: Working: 86 KPa ~ 106 Kpa Transport and storage: 50KPa ~ 106 Kpa Dimension and Weight 60 (W) X 110 (H) X 33 (D) mm 100g (not including sensor ) Configuration Main unit 1 pc Lemo 5 Pin digital Spo2 sensor 0.9m 1pc Charger 1 pc Sling rope 1 pc Built in 3.3V Li-ion rechargeable battery 1 pc Operation manual 1 pc