1.Higher accuracy - precise 3D positioning and compatibility with any coordinate reference system. 2.Stable mounting - modular design for permanent or temporary installation, resistant to displacement. 3.High detectability - geometry and color optimized for automatic photogrammetric recognition. 4.3D depth of the marker - improves stereoscopic measurements and reduces errors. 5.Weather resistance - durable materials for long-term field use. 6.Repeatable measurements - easy relocation and monitor