POxi fingertip pulse oximetry Meditech POxi2 fingertip pulse oximeter is compact and light in weight, 2 Display, alarm function while low voltage. Automatically power off after 8 seconds when finger out. The continuous working time for 39 hours. LED monitor for extended battery life 2 Display Mode SpO2 and pulse monitoring, and histogram of pulse display Easy to use with one-key operation(for power on and change display) Small in size, and easy to carry Low voltage alarm display Auto power-off after 8 seconds without signal Light weight of 50g, batteries included Runs on standard AAA batteries and continuous working time is 39 hours Display Format: LED ¡¡¡¡¡¡SPO2:35-99% in two-digit 7-segment digital ¡¡¡¡¡¡Pulse Ratio:30-240BPM in 3digit 7-segment digital; ¡¡¡¡¡¡Pulse Wave: 6-segment barograph; ¡¡¡¡¡¡Battery Voltage Low Indication: LED signals Dimension:58(L) ¡Á 30(W) ¡Á 36(H) Weight:50g (including batteries) Power Requirements: 2 AAA size 1.5V Alkaline Batteries Power Consumption: less than 40mA. Resolution: ¡À1% for SPO2 and ¡À1 BPM for Pulse Ratio. Measurement Accuracy: ¡À2% in stage of 70%-99 % SPO2 and meaningless when stage being smaller than 70%. ¡À2 BPM for Pulse Ratio. Me asurement Performance in Weak Filling Condition: Oxy haemoglobin and pulse value can be shown correctly when pulse-filling ratio is 0.5%. Interference Resistance Capacity against Ambient Light: Deviation is smaller than ¡À1% between value of Oxy haemoglobin measured in na tural lighting indoor condition and present lighting sources and that measured in dark room. It is equipped with a function switch, through which the Oximeter can be automatically powered off when no finger is in the Oximeter more than 8 seconds.