and the complementary technologies ensure you're not leaving targets behind due to size or depth limitations of a single machine

it's cheap insurance for a coil that costs much more to replace

Lithium 9V batteries push that closer to the upper end of the range

The concentric design keeps your signal focused directly under the center

Built-in volume limiter — protects your hearing without the harsh clipping of cheaper headphones

DetectorPro Ultimate Gray Ghost Platinum Series Headphones with 1/4" Angle Plug 500ma-output and the complementary technologies ensureDetectorPro Ultimate Gray Ghost Platinum Series Signal Limiting Headphones with 1 4" Angle Plug. The DetectorPro Platinum Series is an upgrade of most of their popular headphone models. The upgrade involves the addition of new, high end, crystal clear sounding speakers. These heavy duty headphones provide greater sensitivity to tiny targets, and more raw power at full volume. Also backed by a limited lifetime warranty. This is one headphone you have