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I have Type-2 diabetes and really hate doing the whole finger prick thing. So I was excited about the advertisement about being able to check my blood sugar without the needles.
When the device arrived (delivered by Amazon) it was clearly a different item as pictured in the ad. I contacted them and was told that it isn't possible to check blood sugar without pricking my finger.
Further emails offered first 5% then 10% of my $45.99 original purchase. So all the claims and Dr's being involved were false. Not to mention the 15 days refund (I contacted them within hours after the delivery).
They are not so smart with this scam because of we are in the age of the internet. World wide people can be warned about their shameless behavior.

Selling fake medical devices.
Specifically they advertise a "Medisana LK89" pulsoximeter which can upposedly measure everything including blood pressure and blood glucose.

Fraudulently claiming that this device is approved by many authorities, including a CE MDR mark.

Medisana has no such product (they are aware of the scam)!
And there are no pulsoximeters which are able to measure blood glucose.
Blood glucose measurements still require needles or other invasive measurements.

This website is a complete scam. They are running deceptive video ads on social media marketing a cheap, standard fingertip pulse oximeter (labeled as the "Medisana LK89") by claiming it is a non-invasive blood glucose monitor for diabetics.

Standard pulse oximeters absolutely cannot measure blood sugar. Furthermore, the legitimate medical brand Medisana does not even manufacture this model, meaning this website is using fake branding to trick people into overpaying for a generic $5 device.
When you try to cancel the order, customer support ignores you or stalls so they can process your payment.

Do not buy anything from this site. If you have already purchased from them, contact your bank or credit card company immediately to report the merchant for fraud, request a chargeback, and freeze your card.