Comparison of Herti and Zala 421-20 [S]ave
| Attribute |  Herti × | Zala 421-20 × |
|---|---|---|
| Country | United Kingdom | Russia |
| Company | BAE Systems | Zala Aero Group |
| Platform | Herti | Zala 421-20 |
| Endurance (hrs) | 20 | 8 |
| Payload cap. (kg) | 150 | 50 |
| Max speed (km/h) | 231 | 220 |
| Ceiling (m) | 6,100 | 5,000 |
| Max takeoff weight (kg) | 450 | 200 |
| Width (m) | 12 | 6 |
| Length (m) | 5 | 5.5 |
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