See this link where it says it is discontinued.
http://forums.whiteselectronics.com/showthread.php?77011-Discontinued-models
Then see this link
http://www.detectorprospector.com/forum/topic/3674-whites-m6-returns/#comment-40392
Maybe the White's rep will comment here.
http://forums.whiteselectronics.com/showthread.php?77011-Discontinued-models
Then see this link
http://www.detectorprospector.com/forum/topic/3674-whites-m6-returns/#comment-40392
Maybe the White's rep will comment here.