Accordion

It's possible to add an accordion to meta.

PHP

$box = new Cuztom_Meta_Box( $id, $title, $post_type, array(

    array(
        'accordion',
        array(
            'Tab Name' => array(
                // Fields here
            ),
            'Another Tab Name' => array(
                // Fields here
            )
        )
    )

) );