Garrett Backpack Metal Detector Accessory. The Garrett Backpack 1651700 with adjustable straps has approximately 21.5 inches of interior height and 14.5 inches in width. The Garrett Backpack 1-651700 also has an interior searchcoil pouch making treasure hunting easier in travel. We are an Authorized US Distributor for Garrett metal detector parts and accessories. We offer complete line of Garrett Metal Detector Parts and Accessories. For our complete selection of products by Garrett and other brands please visit our metal detector parts and accessories store section. Features of Garrett Backpack Metal Detector Accessory 1 651700: Approximately 21.5in interior height 14.5in width Interior pouch for searchcoil Adjustable shoulder straps Package Contents: Garrett Backpack Metal Detector Accessory 1651700 Garrett Backpack Metal Detector Accessory