The "Pro" utility of timecode is most visible in the edit suite. Without it, editors must manually align clips by matching waveforms or looking for a visual slate clap—a process that is tedious and prone to error.
: Early systems suffered from "drift," where internal clocks would slowly fall out of sync over long shooting days. Modern "Pro" solutions utilize temperature-compensated crystal oscillators (TCXOs) to maintain accuracy for 24 hours or more without needing a "re-jam". Timecode Pro 3.2.4
A version like "3.2.4" typically represents the evolution of synchronization technology: The "Pro" utility of timecode is most visible