Photo 1 of Wellue Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor with Built-in Memory, Beep reminder, OLED screen, Batteries and Lanyard

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Photo 1 of Wellue Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor with Built-in Memory, Beep reminder, OLED screen, Batteries and LanyardPhoto 2 of Wellue Pulse Oximeter Fingertip, Blood Oxygen Saturation Monitor with Built-in Memory, Beep reminder, OLED screen, Batteries and Lanyard