The left spo2 monitor is here and is much better, better, compared to the right, also bought at Aliexpress at a higher price. Plastics and connections are better, there is no plastic in it, and only the left allows measurement of spo2 even for a 2 year old child. The port also reaches the finger of a 1 month old baby, but it is not enough to be able to measure it in bed. Sent recommended, in Slovenia in 17 days. I would recommend it!