" Features: " Can measure SPO2 and Pulse Rate accurately, can be used for continuous monitoring for sleep study " 160x128 Color TFT 1.8 display with brightness adjustment " SPO2, Pulse Rate, Pulse Rate waveform and bar graph display with timestamp " Review interfaces to let user see measurement in memory in details " Easy to use setup menu " Can set pulse sound, measurement audio alarm for SpO2 and pulse rate " Can set year, date and clock " Battery voltage low indication " Low power consumption " Internal flash memory to store up to 24 hours data " USB connection to up load data to PC to send to physician " Include comprehensive display and data management software Specification " Measurement range: SPO2: 35~99 Pulse Ratio: 30~250BPM " Resolution: 1% for SPO2, 1BPM for pulse rate " Accuracy: ±2% (70~99), unspecified (<70%) for SPO2; ±2BPM or±2% (whichever is greater) for pulse rate " Power supply: Two AA size battery "