White's Coinmaster with Waterproof 9" Spider Search Coil and Treasure Book 800-0325 Includes free Where to Find Treasure Book! 5-Range Discrimination Adjustable Sensitivity Depth Reading as You Hunt Pinpoint/All Metal Mode Rugged Water Resistant Control Box Target ID Adjustable Length: 46"-51" All Metal Audio: Non-VCO Audio Output: Speaker & 1/4 Headphone Batteries: 2 - 9 volt Battery Life: 20 Disc Audio: Silent Search Optional Coils: Coinmaster Family Standard Coil: 9" Number of Presets: 1 Frequency: 8 kHz