„We bought our boat new, with the udst-800 triducer. It failed in a few months, losing the speed measuring capability, which affects other calculated data. The defective unit was replaced under warranty. It failed again, just after the warranty expired. I replaced it with a dst-810. That new unit failed within a few hours, failing to report depth. I returned that unit and bought a second dst-810. So far, after three weeks, its working, but Ive lost confidence in the product.“