Hi coconut, and welcome! I see you recently joined our community (early this morning), and we are happy to have you here!
Thanks for your post! You may be aware we are not able to recommend any particular manufacturer in regards to medical equipment, I am sorry.
However, I can make two suggestions.
First, I am hopeful others in the community will see your post, and respond by sharing their own personal experiences using pulse oximeters. That may give you an idea of what folks are using in their own homes.
Second, the features you are looking for are all available in the pulse oximeter marketplace - finding a manufacturer whose product provides all the parameters will be the challenge. We do have a wealth of material published, right here on our community website, which focuses on this type of equipment, pulse oximeters. I thought, while we wait to hear from others, you might want to start looking them over. (you will note, that your post is included in the search results, too!) For your convenience, here is a link to that material: https://copd.net/search?s=pulse%20oximeter.
I do hope you find this to be helpful in a practical way.
Happy holiday!
Leon (site moderator COPD.net)