Pulse oximeter can be detected spo2 and pulse rate through finger. The product is suitable for being used in family, hospital, oxygen bar, community healthcare, physical care in sports (it can be used before or after doing sports, and it is not recommended to use the device during the process of having sport) etc. Features: Dependable oxygen level and pulse rate Simple operation , small & lightweight design, portable Low power consumption Display spo2, pr, pulse bar Dual color oled display 2 aaa alkaline batteries Low battery indication Auto power on/off Accommodates widest range of finger sizes from pediatric to adult Soft silicone padding, strong slip resistant clip, no pricking Technical specification: Patient range Adult, pediatrics Spo2 Measuring range: 35% - 99% Resolution: 1% Accuracy: 70%-99%: 2%, 35%-69%: unspecified Pr Measuring range: 30bpm ? 250bpm Resolution: 1bpm Accuracy:3% Display: Type: dual-color oled display Parameter: spo2, pr and pulse bar Mode: 1 display mode Alarm: Battery-low indicator Battery: 2 aaa alkaline batteries Normal operation time is about 20 hours. Operation: Temperature: 5~ 40 Humidity: 15% ~ 90% (non-condensing) Atmospheric pressure: 700hpa ~ 1060hpa Storage: Temperature: -20 ~ 70 Humidity: 5% ~ 95% Atmospheric pressure: 500hpa ~ 1060hpa Electromagnetic compatibility The product complies with iec60601-1-2 for electromagnetic compatibility class b Interference resistance capacity against ambient light Deviation is smaller than 1% between values of oxyhemoglobin measured in natural lighting indoor condition and present lighting sources and that measured in dark room. 100pc/ctn