Sell Finger Clip Pulse Oximeter Blood Oxygen Monitor Finger Pulse Heart best price

NOTE: Regarding a lot of customers' feedback that they cannot be turned on after receiving the feedback, please rule out whether the battery is placed incorrectly "+-", if it still does not turn on after being placed correctly, please contact us . NOTE: Regarding a lot of customers' feedback that they cannot be turned on after receiving the feedback, please rule out whether the battery is placed incorrectly "+-", if it still does not turn on after being placed correctly, please contact us . NOTE:M390 & LK 87 This is a different model of oximeter, you need to know before buying. Specification： Name:Fingertip Pulse Oximeter Display Format:OLED two color display / LK87 LED color dipslay Power Requirement:2*1.5V AAA alkaline battery (not include) Power Consumption:Smaller than 30mA Voltage:DC 3.0V Screen Resolution:128*64 PR Measuring Range:30bpm~250bpm SpO2 Measuring Range:0%~100% (LK87 70%-100%) Fingertip Pulse Oximeter OLED display / LK87 LED color dipslay 6-direction display adjustable 8 seconds fast measurement Automatic power off when no signal Low voltage indicator Pulse waveform display(M390) Package include： 1 x Fingertip oxygen monitor (not include the battery) 1 x manual 1 x hand strap