How to change time format (12H or 24H)?

The time format of AM4 is based on your mobile phone.If your phone time format is 24 hours, it will be 24 hours. Otherwise it will be 12 hours.

*credit to Sylvain of iHealth Labs EU

https://helpcenter.ihealthlabs.eu/hc/en-gb/articles/115001764469-iHealth-Wave-AM4-How-to-change-time-format-12H-or-24H-