The watch offers comprehensive sleep recording. It recognises different sleep phases such as light sleep, deep sleep and REM sleep and provides detailed reports on sleep quality.

I don't know

Hello L=50mm, W=38mm, D=15mm Here you go

Unfortunately, we do not currently sell the spare part individually. I recommend that you enquire directly with the manufacturer: https://consumer.huawei.com/ch/support/contact-us/

Thank you very much for your comment; we'll adjust it as soon as possible!

As I understand it, you have already ensured that the watch is worn correctly on the wrist and that the app is properly installed. If the problem persists, you can try to reset the watch to factory settings (all settings and data will be lost). Otherwise I would have to ask you to contact Huawei directly, they may have another tip: https://solar.huawei.com/ch/service-support/tsc?utm_medium=cpc&utm_source=google&utm_campaign=EDM_contact&gclid=CjwKCAiA-P-rBhBEEiwAQEXhH3VsViBQt3IZOMg1eD0_jjUPVxh68LiHo-k6yi8TJHyqnBy1yxyACRoCsWAQAvD_BwE There is a difference in the strap, your watch has a black strap and the more expensive one has a graphite black aluminium strap.

No, it‘s not possible. I bought the watch more for medical purposes, to measure the blood pressure.