# 6.3 Core Parameters

* **Charm**: Affects token earning efficiency (Econ / EVT).
* **Luck**: Influences item box (Lucky Bag) drop rate and contents.(Lucky Bag will be implemented in the future)
* **Durability**: Impacts lifespan consumption and repair intervals.
* **Bond**: Represents attachment. Increases through usage; resets upon resale. (Future expansions planned.)