Echo J7 Cycle Computer Manual -

Attach the magnet to a spoke on the front wheel. It must align with the sensing mark on the transmitter with a gap of 1–3 mm . 3. Initial Programming & Calibration

Includes a backlight for low-light visibility, an alarm, a stopwatch, and a scan mode that cycles through metrics automatically. echo j7 cycle computer manual

Place the wireless transmitter on the front fork. For best signal strength, keep it within 1 to 2 feet (60cm) of the head unit. Attach the magnet to a spoke on the front wheel

For wireless models, you must power both the head unit and the sensor. Use a coin to open the battery compartments. Initial Programming & Calibration Includes a backlight for

Find your tire size (e.g., 700x23C) on the sidewall and look up the corresponding four-digit circumference code (e.g., 2096) in the standard tire size chart .