Fingertip Pulse Oximeter Heart Rate Monitor Blood Oxygen Saturation SpO2 Sensor LED Display

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Fingertip Pulse Oximeter Heart Rate Monitor Blood Oxygen Saturation SpO2 Sensor LED Display
woishi
£6.58 at OnBuy.com
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Specifications: Working voltage: DC 3V Battery life: about 20 hours Working Current: 30mA Operating Temperature: 5-40…

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