Depending on ground mineralization and target size, objects may be detected as deep as 20 feet. A pioneer in the field of metal detector over 60 years ago. Fisher has been advancing the state of art ever since. The Gemini-3 is Fisher's best two-box ever. If you are a two-box treasure hunter, you probably already know the Fisher Gemini-3 has the reputation for being the best around.
Fisher Gemini 3 Features are: Detects all metals, Quality engineered by the oldest and proudest name in the business, Sensitive to large, deep objects and ore veins, Crystal-controlled, 82-Khz transmitter and receiver, Four modes of operation: Inductive Trace, Conductive a Trace, Wide Scan Inductive, and Narrow Scan Inductive Search, Optional ground rod and ground plate assembly for long-distance underground tracing, * 60-cycle noise reduction circuitry , VCO audio target response for precision pinpointing, Built-in recharger circuitry for optional recharger kit, Fisher Gemini 3 Metal Detector