The Zala 421-20 is an active Russian fixed-wing military/ISR drone from Zala Aero Group. Based on the limited confirmed public data supplied, it stands out for an endurance figure of 8 hours and a reported top speed of 220 km/h, which suggests a platform built for persistent observation rather than consumer flying. This page is most useful for researchers, defense market watchers, and institutional buyers comparing fixed-wing ISR UAVs, not general hobby users.