To check the MAC address, serial number, and other relevant information of the Redmi Watch 5 Active, you can follow these methods:
1. On the watch, navigate to the [Settings] menu, then select [About watch]. This section contains key information about the watch, including its name, model, MAC address, serial number, and more;
2. When the watch is connected to your mobile phone, open the [Mi Fitness] APP. From there, tap on [Device] and then [About device] to view details like the MAC address, serial number, and other important information about the watch.