RemoraLure® is here when when you need us. As long as you change the batteries they will vibrate constantly. Always remove the battery when you stop fishing with it. Osmosis is caused by having two different metals in contact with each other and saltwater. Although the actual contact wires that complete the circuit with the battery are stainless steel the batteries are not. The batteries will start rusting almost immediately with salt water contact, but will not affect the power which is normally about 1 hour each. As normal always rinse your equipment and the lures with fresh water after use.