Very good92/100

Medisana's model is close to the top of the test field and offers a sharp display with stable viewing angles. The given setting options are okay, the single button switches through all variants quickly. With wrist strap, without bag.
The measurement of blood oxygen saturation and heart rate is certified as a medical device.
The device switches off automatically after 8 seconds, thereby conserving the batteries.
Measurements can be started easily using a single button directly on the device.