: Most models require you to choose between 12-hour or 24-hour formats and manually set the time using the "Mode" or "Set" buttons. Pairing Sensors
If you can share a photo of the device, I can help identify the exact button layout and any special features your unit may have. echo j7 cycle computer manual
The Echo J7 has on the face: Left (A) and Right (B) . The Echo J7 cycle computer manual refers to these in various sequences. : Most models require you to choose between