After the last water hunt of four over the last month I discovered my external speaker wasn't working as it should. It sounded as if it was partially waterlogged but it had been at least 10 days since it had been in the water. Contacted Minelab, got a RMA, and shipped it off. They sent me return tracking within hours of it arriving at Detector Center, PA. My 800 arrived with paperwork stating they "burped" the detector by removing the battery to to relieve some pressure. They mentioned, when I called, that they've had to do that to a few detectors. Seems odd but for now the speaker is fine.