Abstract: A wearable device system for a cross-reality vision, including a virtual reality image, an augmented reality image, a real-world image, and a mixed reality image, includes an optical combiner configured to receive a virtual reality content from an outside electricity device; a supporting frame where the optical combiner is supported thereon; a wearable band coupled to the supporting frame; wherein the supporting frame comprises an adjustable frame angledly and pivotally coupled to the wearable band; wherein the optical combiner is configured to partially cover eyed of an observer and includes a first free-form optical component, a second free-form optical element overlappedly arranged with the first free-form optical component, and a microdisplay arranged adjacent to the first free-form optical component.