With this setup you will be able to detect in neck deep water wire free with either the Makro Kruzer/MMK or Nokta Anfibio. When sealed, the Otter Box will float on top of the water. It consists of a waterproof Otter Box, M12 8 pin connector on one end which connects to the detectors headphone jack and a 1/4" female jack on other end that connects to the transmitter, Deteknix wireless transmitter and headphones and two charging cables. The sound is excellent and can be adjusted to the same levels as the original blue/green wireless headphones.
If interested, I have it listed in the Classified forum. https://www.findmall.com/read.php?65,2487043
If interested, I have it listed in the Classified forum. https://www.findmall.com/read.php?65,2487043