■ Using advanced blood oxygen algorithm, with good Anti-Jitter. ■ Adopt Dual-color OLED display, 4 interface display, display test value and blood oxygenation graph at the same time. ■ According to the data needs of patient observation, the display interface can be manually pressed to change the display direction. ■ The product has low power consumption, with two AAA batteries that can last for 30 hours. ■ Good low-weak perfusion: ≤0.3%. ■ When the blood oxygen and pulse rate exceed the range, the buzzer alarm can be set, and the upper and lower limits of the blood oxygen and pulse rate alarm can be set in the menu. ■ When the battery power is too low and normal use is affected, the Visual window will have a low voltage warning indicator. ■ When no signal is generated, the product will automatically shut down after 16 seconds. ■ Small size, light weight, easy to carry.• Oxygen desaturation index ODI4 • Data store and analysis, Data review • Screen Display 4 directions and 6 models • 0.96"Dual-color OLED display • Visual and sound alarm function, pulse rate sound indication • Anti-movement, good low-perfusion performance • Low power consumption ( less than 30mA) • Power Supply: 1.5V (AAA size) alkaline batteries × 2•SpO2 Range: 35%～100％ Resolution: 1% Accuracy: 2% (range 80%-100%), 3% (range 70%-80%), unspecified (﹤70%) • Pulse Rate Range: 25bpm / min ～250bpm / min Resolution: 1bpm Accuracy: 2bpm Normal 3bpm Motion/low perfusion • PI Range: 0～30％ Resolution: 0.1% Accuracy: 1%(range 0-20%), unspecified ( 20%-30%) • ODI4 One Device - Multiply usefull advantages 1、Four Parameters: SpO2 +PR+PI+ODI 2、Data Store, up to 8 hours 3、Graph review, each page 15 min, up to 32 pages 4、Data analysis Result ODI4 , Recorder time , Max SpO2, Min SpO2, Max PR, Min PR Perfusion Index ( PI) PI is the Index Perfusion (PI), PI value reflects the pulsatile flow of blood, that is reflected Blood flow perfusion ability. The greater the pulsation of the blood flow, the more pulse component, the greater the value of PI. Therefore, measurement Site (skin, nails, bones, etc.) and the patient's own blood flow (flow of blood) will affect the value of PI.