The AT Pro is a fully submersible detector (up to 3 metres).  It can be used on land but is great at the beach or in rivers as it can be used underwater.

Key Features:

• Pro Mode Audio™: Proportional Audio and Tone Roll Audio™ allow the user to hear characteristics of a target as they would in a True All-Metal Mode.
• Digital Target ID: 0 to 99 Target ID scale offers increased ability to distinguish one target's conductivity from another.
• High-Res Iron Discrimination™: To set iron discrimination in one of 40 levels for precise ability to separate good targets from trash, (use touch pads).
• Iron Audio™: Allows the user to hear discriminated iron and to alter the detector's mid-tone signal's range
• Fast Recovery Speed: Allows greater ability to pick out good targets among trash
• All Terrain Versatility: Weatherproof housing designed for dusty, humid or wet environments; unit can be submerged to a maximum 10-foot depth.
• 15 kHz frequency: improved detection of small targets, gold nuggets, jewellery
• Ground Balance: automatic and manually adjustable for improved
  performance
• Graphic Target Analyzer™ (GTA):  target's conductivity identified
• Continuous Coin Depth Indicator: to determine target depth
• Battery Condition Indicator: battery life continually shown

 Search Modes (Discrimination Patterns): 6 plus electronic pinpointing 

 Select from Custom, Zero or Coins in Standard Mode or in Professional Mode Pinpoint

The AT Pro has land headphones as standard.  The fully submersible headphones are an optional extra.