It came quickly enough despite 11.11.
Packaging was not damaged.
The readings are accurate or not yet unknown. There are different settings (flip display, re-press button on, long hold button on, settings).
Delivery in 10 days. Just shine. Pulsic works properly. Includes a hard storage case, a lace. Instructions on the Russian, unfortunately, no. Not scary, since the use is impossible simplified. With the seller did not communicate
We need to wait a little bit, because from the beginning it shows very low saturation. A little flimsy at first glance. Later I will compare the indicators with the professional pulse oximeter at work.
Received for 18 days, despite the holidays). Put AAA batteries, checked. Works great. Falls asleep as soon as you remove from your finger. You can see the "cardiogram", the display is clear. During measurement, pressing the button unfolds the image, convenient. Compared the readings with the measurement of Samsung, measured simultaneously on 2 fingers), the readings coincide. The seller and the device recommend.