Review on Pulse oximeter on a finger Fingertip Pulse Oximeter LK87 measurement of oxygen and pulse. by gnes Bdi (Bdi gnes) ᠌
Not a bad product, but you can find better.
One thing is the same, if there is gel polish on the nails, the device does not read the information, there are dashes on the screen. With its pros: Pluses for delivery and service, for the device itself I can put only 3 stars. Cons: Batteries are not included although the description says they are included. The polarity of the batteries is reversed. Where a minus is indicated, there should actually be a plus.
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