Date

See Text field for complete documentation.

PHP

$box = new Cuztom_Meta_Box( $id, $title, $post_type, array(
        
    array(
        'id'    => '_data_date',
        'type'  => 'date',
        'label' => 'Field Label',
        'args'  => array(
            'date_format' => 'mm/dd/yy'
        )
    ),

    ...

) );