Abstract: A heart monitor with diagnostic display including a plurality of electrodes structured to collect heart beat data from electrical pulses within a heart. The heart monitor also includes a processor adapted to receive the heart beat data from the plurality of electrodes and structured to connect with a long-range wireless network and a diagnostic display unit. The diagnostic display unit is structured to display biometric measurements including a first unit of time along a first axis and a second unit of time, smaller than the first unit of time, along a second axis. It also displays a gradient block having a primary characteristic indicative of a primary characteristic of a cardiac event detected by the processor in the heart beat data during a collection time and located at an intersection of the first axis and the second axis corresponding to a collection time of cardiac activity.