Embodiments of the present invention are directed to security systems for securing an item of merchandise from theft or unauthorized removal. For example, the security system may include a sensor configured to be coupled to the item of merchandise and a base configured to removably support the sensor and the item of merchandise thereon. The base includes a charging circuit for providing power to the sensor and/or the item of merchandise. The security system also includes a controller operably coupled to the base and a key configured to wirelessly communicate with the base and/or controller. The sensor is configured to wirelessly communicate with the base.