The Bounty Hunter® Tracker II Metal Detector is a classic model with redesigned graphics and electronics for improved performance. As a target nears, the Tracker II's intensity meter provides a visual cue, and the audio feedback tone increases. In addition, the two-tone audio feedback control aids in distinguishing between valuables and undesirable metals and can be discerned with or without headphones plugged into the 1/4 " jack. This model also includes Bounty Hunter's® standard preset ground balance with the added flexibility of a user-controlled ground balance for sand, clay, and red clay. The entire line of Bounty Hunter® metal detectors operate on two 9-Volt batteries (not included) and are designed to be lightweight and ergonomic for easy handling and comfortable use. Their standard motion all-metal mode detects all types of metal, while the progressive discrimination control eliminates iron and other unwanted items.