Features for Fingertip Pulse Oximeter: - Reliable accuracy and durability- Two Color OLED Display、 four display modes.- 4-Direction Display adjustable.- Low voltage indicator、 Real-time spot-checks.- Low power consumption、50 hours continuous to work.- Low Perfusion ¡Ü0.4%- Automatic power off when no signal- Small and light weight、 convenient to carry- Widely used in hospital、 home healthcare、 oxygen bar、 community medical centre、 alpine area、 sports healthcare etc.Specification for Fingertip Pulse Oximeter:DisplayOLED two color displaySpO2Measurement range: 70¡«99%Resolution: ¡À1%Accuracy: ¡À2% (70%¡«99%)、 unspecified (<70%)Pulse rateMeasurement range: 30¡«240 bpmResolution: ¡À1%Accuracy: ¡À2bpm or ¡À2% (select larger) Low Perfusion ¡Ü0.4%Power1.5V (AAA size) alkaline battery x 2Supply voltage: 2.6~3.6VWorking current¡Ü30mAAutomatic power-offAutomatically power off when no signal in the oximeter for more than 8 secondsDimension & Weight130 (L) ¡Á 100(W) ¡Á60(H) mm65g(without batteries)Optional Color:- Pink- Blue- Light Purple- Green- GrayPackage Content:- 1 x RPO-8A Fingertip Oximeter- 1 x Lanyard- 1 x English user's manualNote:We will not include batteries、 according to China and International law、 batteries are not allowed for international air transportation for the safety of shipping and protection environment. Thank you for your understanding! XIAOWEI