Analysts note that all Chinese J-series fighters, including export versions, use HMSD helmet-mounted displays (HMDs). However, when comparing the J-35’s HMD with the advanced HMDS Gen III used on the F-35—costing around $400,000—they find significant differences. The F-35’s HMDS Gen III is a key fifth‑generation technology that replaces traditional HUDs and greatly enhances pilot experience, a level of sophistication the J-35’s helmet does not match. Building a full‑capability HMD like the HMDS Gen III is expensive, complex, and risky, leading many countries to prefer cheaper, more reliable solutions; the Chinese system retains a conventional HUD as a fallback if the helmet encounters technical issues.