The following methods can be used to identify the Quarrz brand:
Method 1: During startup, the display will show the following in sequence: brand logo, model number (e.g., Quarrz, AU-300S).
Method 2: After powering on, simultaneously press the ZERO key + B key. The display will sequentially show the brand, model, and factory serial number, corresponding to the brand, model, and serial number labels affixed to the device.
Method 3: Verify the anti-counterfeiting code automatically generated from the serial number.
