Garrett Infinium LS Metal Detector - WATERPROOF!
http://www.amazon.com/dp/B000GT9I0I?tag=takingchances-21-20
Feature
* All Metal Deepseeking Mode
* Audio Threshold, Adjustable
* Frequency, Adjustable
*
All Garrett models have waterproof coils.

Features:
All Metal Deepseeking Mode
Audio Threshold, Adjustable
Audio Tone ID
Discrimination, Full Range (PI)
Frequency, Adjustable
Ground Balance, Automatic Ground Tracking
Hip Mount Control Box
Microprocessor Controlled
Salt Elimination Mode (PI)
Surface Mount PC Board Technology
http://www.amazon.com/dp/B000GT9I0I?tag=takingchances-21-20