Contains all the features you have come to expect. The most complete do it all ek calling system ever produced with features designed with the serious elk hunter in mind: – The Tone Selector Simply dial the bull sounds desired; small medium or large with true back pressure. – Expandable outside tube Overall length of tube when expanded is 23 and collapses to 17 allows for better compaction and ease when carrying. – The Tube Tamer produces better sound quality and coupled with the Conqueror external mouthpiece even novice callers can use this tube. Remove the Conqueror mouthpiece for diaphragm use. – Also Includes an extra Palate Plate replacement reed non-slip camo cover protective cap for mouthpiece and lanyard.