DD You get a high-end IB detector with a 32cm DD coil that you have received with M1 M1. For use with the handle, you can achieve excellent ergonomics by fixing the main unit to the handle. With the M1 and DD coil you have a single currency detector that is deeper than the VLF detectors and is virtually unaffected by the mineral compared to VLF detectors. Mono Coil. Thanks to the mono 45cm coil or mono kite coil you have with M1, you have a deep search detector that can completely eradicate the mineral by balancing the soil. This allows you to detect metal from the depth you cannot imagine. Not affected by the mineral.