A miniature space marine helmet, rendered with crisp high definition. It boasts perfectly smooth, polished surfaces and sharply defined, clean edges that emphasize its robust, angular design. A prominent, narrow horizontal visor slits across the front, made from a dark, reflective material. The helmet's bulky, protective form suggests a dense, unblemished ceramic or reinforced plasteel, giving it a rigid, impenetrable feel, scaled precisely for a 25mm figure.