Minelab's SDC 2300 All-Terrain Gold Detector is a collapsible military-grade compact detector that comes assembly free and is waterproof and fully submersible up to a depth of 10 feet. The rugged detector enables law enforcement to clearly identify even the smallest patches of sub-gram gold on land and underwater with settings for both normal and salt-water sensitivity ranges. It collapses to a portable 15.7 inches and transforms into a full-sized 59.1 inches gold detecting machine.