Yeah I have a pair. If you are going to submerge the detector, they're an absolute must, as the internal speaker is useless. They work very well but I rarely use them since they are hot, and I don't like being cut off from my surroundings.
Thanks. I've only been in the water once. I was using my earbuds, but it limited me to the depth of the rod up to the control box. I knew if I submerged the control box I'd lose contact with the wireless earbuds.