Key features of a high-quality falchion sword include a single-edged, slightly curved blade designed for powerful cutting. High-carbon steel ensures durability, sharpness, and edge retention. Proper heat treatment adds flexibility and strength. A full-tang construction improves balance and control, while an ergonomic handle offers a secure grip. Quality craftsmanship, weight distribution, and a well-finished blade enhance performance, making it reliable for both functional use and historical collecting.