Use to locate ferrous objects under ground, water, or in snow. Lightweight, ergonomic handle with textured grip. One-handed operation—volume and sensitivity can be controlled with same hand. "Erase" magnetic interference function. Quick change battery compartment. High impact plastic case is water-resistant, lightweight and epoxy sealed. Aluminum sensor tube is waterproof to just under the plastic case. Powerful magnetic speaker with waterproof Mylar cone. Adjustable sensitivity and volume dials with on/off power control. Speaker function sounds deep audio tone while searching and alerts of ferrous objects with signal "peak".