Always visible on the top half of the screen.

Because the Echo T3 is a clone of popular designs (like the Sigma or Cateye base models), the manual is mostly standardized. However, finding an official Echo T3-specific PDF for free can require some digging.

: Re-verify your wheel circumference setting. You can find more specific model manuals and troubleshooting guides on sites like Manuals.au or ManualsLib . Bicycle Maintenance: How To Install a Bicycle Computer

: Tracks the total cumulative distance traveled since the last battery change. How to Reset Trip Data

The distance between the magnet and the sensor must be 2mm to 4mm (about the thickness of a coin).

Without the physical manual, these are the top 5 issues solved by the PDF:

Before configuring your Echo T3, ensure the device has fresh batteries to prevent data loss or screen fading during setup. Battery Specifications

Press the button to toggle between kilometers per hour and miles per hour. Press the Set button on the back to confirm your choice. Step 2: Input Wheel Circumference

Records the absolute highest speed achieved since the last reset. How to Reset Trip Data