Fisher F75 LTD: Fisher F75 with Boost and Cache Processes. The most versatile high performance detector ever made! It is the industry's premier relic hunting and ultimate multi - purpose metal detector. Features: Boost Process substantially increases depth under most conditions. Cache Locating Process is designed to find large deep objects. Lightest and best balanced of all high-performance metal detectors; Best Ergonomics in the Industry.  Powerful Performance Trigger-Actuated Target Pinpointing with Variable Audio Pitch. Large LCD Sc... reen with 0-99 Numeric Target Identification Display.  Double-Filter Discrimination Modes for Searching in Trashy Areas.  Magnetic Mineralization Bar Graph and Readout.  Trigger-Actuated FASTGRAB Ground Balance.  Manual Ground Cancellation Option.  Non-Volatile Memory Saves Settings.  Backlight - For Low Light Hunting Conditions.  Low Operating Cost - Typically 40+ Hours with 4-AA Alkaline Batteries.  11" DD and 5" DD Waterproof Searchco